Top 100 IMS DB Multiple Choice Questions (MCQs) with Answers

1 .

IMS stands for _______.

A)

Inter-management system

B)

Information management system

C)

International message system

D)

None of the above

Correct Answer : Information management system

Explanation : IMS DB (Information Management System Database) is a hierarchical database management system developed by IBM.

2 .

Which of the following is not a type of IMS DB database?

A)

Relational database

B)

Network database

C)

Hierarchical database

D)

Object-oriented database

Correct Answer : Relational database

Explanation : IMS DB is a hierarchical database management system, which means that it stores data in a tree-like structure with parent-child relationships. It also supports network databases, which are similar to hierarchical databases but allow for more complex relationships. However, IMS DB does not support relational databases, which store data in tables with columns and rows.

3 .

What does DBDGEN stands for?

A)

Database Descriptor Generator

B)

Data Description Generator

C)

Database Description Generator

D)

None of the above

Correct Answer : Database Descriptor Generator

Explanation : DBDGEN stands for Database Descriptor Generator.

4 .

Which function is used to get a next record for update purpose?

A)

DLI-GN

B)

DLI-GU

C)

DLI-GHU

D)

DLI-GHN

Correct Answer : DLI-GHN

Explanation : 'GHN' code is used for Get Hold Next. Hold function specifies that we are going to update the segment after retrieval. The Get Hold Next function corresponds to the Get Next call.

5 .

IMS was developed by which of the following company?

A)

Apache

B)

Google

C)

IBM

D)

Microsoft

Correct Answer : IBM

Explanation : IMS was developed by IBM in the year 1966.

6 .

IMS database is used by ____ programming languages?

A)

High-level

B)

Low-level

C)

Both (A) and (B)

D)

None of the above

Correct Answer : High-level

Explanation : IMS database is used by high-level programming languages like COBOL.

7 .

What is the purpose of the IMS DB DL/I interface?

A)

To provide a way for IMS DB to interact with other databases

B)

To provide a way for IMS DB to interact with the operating system

C)

To provide a way for applications to interact with the IMS DB database

D)

None of the above

Correct Answer : To provide a way for applications to interact with the IMS DB database

Explanation : The DL/I interface is a set of programming interfaces that allow applications to access and manipulate data stored in an IMS DB database. It provides a way for applications to issue commands and queries to the database, and to receive data in response.

8 .

Which of the following is not a component of an IMS DB system?

A)

Transaction manager

B)

Message queue manager

C)

Application program

D)

Database management system

Correct Answer : Message queue manager

Explanation : While message queue managers are often used in conjunction with IMS DB systems, they are not a component of the IMS DB system itself. The three main components of an IMS DB system are the database management system, the transaction manager, and the application program.

9 .

How many checkpoint methods are there in IMS DB?

A)

1

B)

2

C)

3

D)

4

Correct Answer : 2

Explanation : There are two checkpoint approaches :

* Basic Checkpointing
* Symbolic Checkpointing

10 .

Which checkpoint call can be used to establish a checkpoint?

A)

CP

B)

CKP

C)

CHEPOI

D)

CHKP

Correct Answer : CHKP

Explanation : A checkpoint can be established using a checkpoint call (CHKP).

11 .

The IMS database is a ____ database.

A)

Hierarchical

B)

Relational

C)

Non-relational

D)

Object-oriented

Correct Answer : Hierarchical

Explanation : The IMS database is a hierarchical database in which information is stored at various levels with each entity depending on entities at higher levels.

12 .

Does the IMS database management system maintain integrity?

A)

Yes

B)

No

C)

Can Not Say

D)

None of the above

Correct Answer : Yes

Explanation : IMS database management system protects data's integrity and enables quick recovery of it by structuring it in a way that makes it easy to find.

13 .

In IMS, the task of the ____ is to operate as a platform for communication between the application programs and the database.

A)

Segment manager

B)

Database manager

C)

Operation manager

D)

Transaction manager

Correct Answer : Transaction manager

Explaination : The task of the transaction manager is to operate as a platform for communication between the application programs and the database.

14 .

To save and retrieve data from the database, a ____ interacts with the end user.

A)

Segment manager

B)

Database manager

C)

Transaction manager

D)

Operation manager

Correct Answer : Transaction manager

Explanation : To save and retrieve data from the database, a transaction manager interacts with the end user.

15 .

A ____ is a stage where the database changes done by the application program are considered complete and accurate.

A)

Milestone

B)

Checkpoint

C)

Snap shot

D)

Breakpoint

Correct Answer : Checkpoint

Explaination : A checkpoint is a stage where the database changes done by the application program are considered complete and accurate.

16 .

Which of the following database recovery is also known as backout recovery?

A)

Forward Recovery

B)

Backward Recovery

C)

Both (A) and (B)

D)

None of the above

Correct Answer : Backward Recovery

Explanation : Backward recovery is also known as backout recovery.

17 .

How many approaches are there for database recovery?

A)

2

B)

3

C)

4

D)

5

Correct Answer : 2

Explanation : The two approaches to database recovery are :

* Forward Recovery
* Backward Recovery

18 .

A logical child segment consists of how many parts?

A)

2

B)

3

C)

4

D)

5

Correct Answer : 2

Explanation : A logical child segment consists of the following two parts:

* Destination Parent Concatenated Key (DPCK)
* Logical child user data

19 .

What is a segment in an IMS DB database?

A)

A record in a table

B)

A node in a tree-like structure

C)

Both (A) and (B)

D)

A group of related data items

Correct Answer : A group of related data items

Explanation : In an IMS DB database, data is stored in a hierarchical structure with segments as the nodes. A segment can contain one or more data items, and may have child segments linked to it. The hierarchical structure allows for efficient access to data, especially for applications that access data in a particular order.

20 .

What is a PSB in an IMS DB system?

A)

A program storage block

B)

A program scheduling block

C)

A program specification block

D)

None of the above

Correct Answer : A program specification block

Explanation : A PSB (program specification block) is a component of an IMS DB system that defines the interface between an application program and the IMS DB database. It specifies the database segments and fields that the program can access, as well as any processing options or rules.

21 .

What is a PCB in an IMS DB system?

A)

A program configuration block

B)

A program control block

C)

A program communication block

D)

None of the above

Correct Answer : A program control block

Explanation : A PCB (program control block) is a component of an IMS DB system that represents a particular database segment or group of segments that an application program can access. It contains information about the segment, such as the name, location, and processing options.

22 .

What is a database record in an IMS DB system?

A)

A field

B)

A segment

C)

A collection of related segments

D)

None of the above

Correct Answer : A collection of related segments

Explanation : In an IMS DB system, a database record is a collection of related segments that are linked together in a hierarchical structure. The record may contain one or more segments, depending on the complexity of the data being stored. The segments in a record may have parent-child relationships, or they may be linked in other ways, such as through pointers.

23 .

In PCB which field is used to store the level of the segment that was processed?

A)

SEG-LEVEL

B)

STATUS-CODE

C)

PROC-OPTIONS

D)

RESERVED-DLI

Correct Answer : SEG-LEVEL

Explanation : Segment level is known as Segment Hierarchy Level Indicator. It contains character data and is two bytes long. A segment level field stores the level of the segment that was processed. When a segment is retrieved successfully, the level number of the retrieved segment is stored here.

24 .

Which SSA provides the segment type with the specific database occurrence of a segment?

A)

Qualified SSA

B)

Unqualified SSA

C)

Both (A) and (B)

D)

None of the above

Correct Answer : Qualified SSA

Explanation : A Qualified SSA provides the segment type with the specific database occurrence of a segment.

25 .

What command code we used to code for Path Call Ignore?

A)

U

B)

Q

C)

P

D)

N

Correct Answer : N

Explanation : To use command codes, specify an asterisk in the 9th position of the SSA and for Path Call Ignore we code N at 10th position.

26 .

Which of the following comprises application programs that grant access to the data stored in the database?

A)

Segment

B)

Segment Type

C)

Transaction manager

D)

Data Language Interface DL/I

Correct Answer : Data Language Interface DL/I

Explaination : Data Language Interface DL/I comprises of application programs that grant access to the data stored in the database.

27 .

Does IMS support applications from different languages such as Java and XML?

A)

Yes

B)

No

C)

Can Not Say

D)

None of the above

Correct Answer : Yes

Explanation : IMS can be utilized to run programs written in several languages, including Java and XML.

28 .

A ____ is generated by combining groups of related data.

A)

Section

B)

Segment

C)

Relationship

D)

All of the above

Correct Answer : Segment

Explanation : A segment is generated by combining groups of related data.

29 .

Each segment of data contains a _______.

A)

Data

B)

Field

C)

Value

D)

Variable

Correct Answer : Field

Explanation : Each segment of data contains a field. Roll Number, Name, and Course, for instance, are all separate fields in the student segment.

30 .

Which of the following is not a type of IMS DB program?

A)

BMP program

B)

DL/I program

C)

BMP transaction program

D)

None of the above

Correct Answer : BMP transaction program

Explanation : While BMP (batch message processing) programs and DL/I (data language/interface) programs are types of programs that can be used in an IMS DB system, BMP transaction programs are not a type of program. BMP programs are used to process large batches of data, while DL/I programs are used to access and manipulate data in the IMS DB database.

31 .

Which of the following is not a type of IMS DB data set?

A)

HIRAM data set

B)

HDAM data set

C)

HIDAM data set

D)

HISAM data set

Correct Answer : HIRAM data set

Explanation : While HDAM (hierarchical direct access method), HIDAM (hierarchical indexed direct access method), and HISAM (hierarchical indexed sequential access method) are all types of IMS DB data sets, HIRAM data sets do not exist. Each type of data set has its own characteristics and is used for different types of data and applications.

32 .

Which of the following is not a type of IMS DB command?

A)

ADD command

B)

READ command

C)

DELETE command

D)

WRITE command

Correct Answer : WRITE command

Explanation : While the READ, DELETE, and ADD commands are all commands that can be used to manipulate data in an IMS DB database, there is no WRITE command. Instead, the UPDATE command is used to modify existing data in a database record.

33 .

A concatenated segment consists of how many parts?

A)

2

B)

3

C)

4

D)

5

Correct Answer : 2

Explanation : A concatenated segment consists of the following two parts −

* Logical child segment
* Destination parent segment

34 .

DPCK stands for ______.

A)

Destroyed Parent Concatenated Key

B)

Destination Parent Concatenated Key

C)

Deprecated Parent Concatenated Key

D)

Degenerated Parent Concatenated Key

Correct Answer : Destination Parent Concatenated Key

Explanation : DPCK stands for Destination Parent Concatenated Key.

35 .

How many types of logical relationships are there?

A)

1

B)

2

C)

3

D)

4

Correct Answer : 3

Explanation : There are three different kinds of logical relationships: unidirectional, bidirectional, and virtual.

36 .

Each segment type can have ____ parent, according to a rule in the IMS database.

A)

Only 1

B)

More than 1

C)

Any Number

D)

None of the above

Correct Answer : Only 1

Explanation : Each segment type can only have one parent, according to a rule in the IMS database.

37 .

What are the maximum number of fields in a database?

A)

555

B)

755

C)

899

D)

1000

Correct Answer : 1000

Explanation : Maximum number of fields per database are 1000.

38 .

The ____ holds the key value from the segment in the index-built database.

A)

Prefix Element

B)

Data Element

C)

Can Not Say

D)

None of the above

Correct Answer : Data Element

Explanation : The data element holds the key value from the segment in the index-built database.

39 .

How many levels of hierarchy a DLI database supports?

A)

15

B)

20

C)

25

D)

35

Correct Answer : 15

Explanation : A DL/I database can have 255 different segment types and 15 levels of hierarchy.

40 .

Which function is used to get the next record in sequential order?

A)

DLI-GU

B)

DLI-GN

C)

DLI-GHU

D)

DLI-GHN

Correct Answer : DLI-GN

Explanation : 'GN' code is used for the Get Next function. It works similar to the read next statement in COBOL. It is used to fetch segment occurrences in a sequence.

41 .

In PCB which field tells what kind of processing the program is authorized to do on the database?

A)

SEG-LEVEL

B)

STATUS-CODE

C)

RESERVED-DLI

D)

PROC-OPTIONS

Correct Answer : PROC-OPTIONS

Explanation : Proc options are known as processing options which contain four-character data fields. A Processing Option field indicates what kind of processing the program is authorized to do on the database.

42 .

In PCB which field contains the longest possible concatenated key that can be used with the programâ€™s view of the database?

A)

KEY-FB-AREA

B)

SEG-NAME

C)

LENGTH-FB-KEY

D)

NUMB-SENS-SEGS

Correct Answer : KEY-FB-AREA

Explanation : Key feedback area varies in length from one PCB to another. It contains the longest possible concatenated key that can be used with the program’s view of the database.

43 .

Hierarchical databases work on the relationships between _______.

A)

Two fields

B)

Two variables

C)

Two or more segments

D)

Two or more category

Correct Answer : Two or more segments

Explanation : Hierarchical databases work on the relationships between two or more segments.

44 .

Which of the following is the segment that sits at the top of the hierarchy?

A)

First segment

B)

Root segment

C)

Core segment

D)

Main segment

Correct Answer : Root segment

Explanation : The root segment is the segment that sits at the top of the hierarchy.

45 .

All dependent segments can only be accessed through the ____ segment.

A)

Root segment

B)

Child segment

C)

Main segment

D)

Parent segment

Correct Answer : Root segment

Explanation : All dependent segments can only be accessed through the root segment.

46 .

A segment is considered a ____ segment if it has another segment right above it in the hierarchy.

A)

Core

B)

Left

C)

Child

D)

Parent

Correct Answer : Child

Explanation : A segment is considered a child segment if it has another segment right above it in the hierarchy.

47 .

Two or more segment occurrences of a particular segment type under a single parent segment are called ____ segments.

A)

Pair segment

B)

Duo segment

C)

Clone segment

D)

Twin segment

Correct Answer : Twin segment

Explaination : The term "twin segments" refers to two or more occurrences of a specific segment type within a single parent segment.

48 .

Sibling segments are the segments of the same types and the same parent.

A)

True

B)

False

C)

Can Not Say

D)

None of the above

Correct Answer : False

Explanation : Sibling segments are the segments of different types and the same parent.

49 .

A pointer to the Index Target Segment is present in the ____ of the index pointer segment.

A)

Prefix Element

B)

Data Element

C)

Can Not Say

D)

None of the above

Correct Answer : Prefix Element

Explanation : A pointer to the Index Target Segment is present in the prefix part of the index pointer segment.

50 .

Index pointer segment consists of how many parts?

A)

5

B)

4

C)

3

D)

2

Correct Answer : 2

Explanation : The index pointer segment consists of two parts :

* Prefix Element
* Data Element

51 .

Which SSA cannot be used with a REPL call?

A)

Qualified

B)

Unqualified

C)

Can Not Say

D)

None of the above

Correct Answer : Qualified

Explanation : With a REPL call, we are unable to employ a qualified SSA.

52 .

Can we change the length of a segment using a REPL call?

A)

Yes

B)

No

C)

Can Not Say

D)

None of the above

Correct Answer : No

Explanation : With a REPL call, we are unable to modify a segment's length.

53 .

What is the purpose of the IMS DB secondary index?

A)

To store backup copies of database records

B)

To provide additional security for the database

C)

To improve the performance of database searches

D)

None of the above

Correct Answer : To improve the performance of database searches

Explanation : A secondary index is a data structure that is created to improve the performance of database searches by providing an alternative access path to the data. It is based on one or more fields in the database record, and is used to quickly locate records that match a particular search criteria.

54 .

What is a DLI (Data Language Interface) call in an IMS DB system?

A)

A request by the database management system to the operating system for resources

B)

A request by an application program to access or manipulate data in the database

C)

A request by the operating system to the database management system for information

D)

None of the above

Correct Answer : A request by an application program to access or manipulate data in the database

Explanation : A DLI (Data Language Interface) call is a request made by an application program to access or manipulate data in an IMS DB database. The call is used to request data from the database, update existing data, or delete data from the database. The DLI interface provides a standard set of calls that can be used by application programs to interact with the database.

55 .

What is the purpose of the PCB (Program Communication Block) in an IMS DB system?

A)

To describe the format of database records

B)

To specify the database segments and fields that an application program accesses

C)

To provide a communication link between an application program and the database management system

D)

None of the above

Correct Answer : To provide a communication link between an application program and the database management system

Explanation : The PCB (Program Communication Block) is used in an IMS DB system to provide a communication link between an application program and the database management system. It contains information about the location of the database and the type of access that is required, as well as information about the program’s communication requirements.

56 .

What error code you will get in GU call if DL/I could not find a segment that met the criteria specified in the call?

A)

GE

B)

GF

C)

ZERO

D)

SPACE

Correct Answer : GE

Explaination : You will get GE value in STATUS-CODE if DL/I could not find a segment that met the criteria specified in the call.

57 .

What is the retrieval sequence in IMS DB?

A)

Left to right

B)

Front to back

C)

Top to bottom

D)

All of the above

Correct Answer : All of the above

Explanation : All these are the approaches which are used for retrieval of data.

58 .

For FIELD macro statement in DBDGEN, what does TYPE=H parameter specifies?

A)

Half word binary data type

B)

Character data type

C)

Hexadecimal data type

D)

Packed decimal data type

Correct Answer : Half word binary data type

Explanation : TYPE = H specifies Half word binary data type for the field which we have declared.

59 .

In PCB which field contains the DL/I status code?

A)

SEG-LEVEL

B)

STATUS-CODE

C)

PROC-OPTIONS

D)

RESERVED-DLI

Correct Answer : STATUS-CODE

Explanation : Status code field contains two bytes of character data. Status code contains the DL/I status code. Spaces are moved to the status code field when DL/I completes the processing of calls successfully.

60 .

How many types of Get Hold calls do we specify in a DL/I call?

A)

3

B)

4

C)

5

D)

6

Correct Answer : 3

Explanation : There are three types of Get Hold call that we specify in a DL/I call :

* Get Hold Unique (GHU)
* Get Hold Next (GHN)
* Get Hold Next within Parent (GHNP)

61 .

Multiple processing can be done in how many ways?

A)

4

B)

3

C)

2

D)

1

Correct Answer : 2

Explanation : Multiple processing can be done in two ways :

* Multiple PCBs
* Multiple Positioning

62 .

____ is the term used to describe when a program occupies more than one position in the IMS database.

A)

Dual processing

B)

Multiple processing

C)

Parallel processing

D)

None of the above

Correct Answer : Multiple processing

Explaination : Multiple processing is the term used to describe when a program occupies more than one position in the IMS database.

63 .

V command code is ignored when used with a ____ SSA.

A)

Qualified

B)

Unqualified

C)

Can Not Say

D)

None of the above

Correct Answer : Qualified

Explanation : V command code is ignored when used with a qualified SSA.

64 .

What is the purpose of a DBD (Database Descriptor) in an IMS DB system?

A)

To describe the format of database records

B)

To specify the database segments and fields that an application program accesses

C)

To provide a communication link between an application program and the database management system

D)

None of the above

Correct Answer : To describe the format of database records

Explanation : A DBD (Database Descriptor) is used in an IMS DB system to describe the format of database records. It contains information about the structure of the data, including the names and types of fields, as well as information about the relationships between different segments in the database.

65 .

What is the purpose of the LOG (Logging) data set in an IMS DB system?

A)

To provide additional security for the database

B)

To store backup copies of the database

C)

To provide a record of system activity for recovery purposes

D)

None of the above

Correct Answer : To store backup copies of the database

Explanation : The LOG (Logging) data set is used in an IMS DB system to store backup copies of the database. It is used to ensure that changes made to the database are not lost in the event of a system failure, and can be used to restore the database to a previous state if necessary.

66 .

What is a secondary index in an IMS DB system?

A)

An index that is used to improve the performance of database searches

B)

An index that is created automatically by the database management system

C)

An index that is created by the application program to improve access to the database

D)

None of the above

Correct Answer : An index that is created by the application program to improve access to the database

Explanation : A secondary index in an IMS DB system is an index that is created by the application program to improve access to the database. It provides a way for the program to locate specific records in the database more quickly and efficiently than by searching through the entire database.

67 .

Which of the following is not a valid IMS DB command code?

A)

DLI

B)

PCB

C)

SSA

D)

SSAQB

Correct Answer : SSAQB

Explanation : While DLI (Data Language Interface), SSA (Segment Search Argument), and PCB (Program Communication Block) are all valid IMS DB command codes, SSAQB is not a valid code.

68 .

What is the purpose of the SSA (Segment Search Argument) in an IMS DB system?

A)

To specify the format of database records

B)

To specify the search criteria for a database query

C)

To provide a communication link between an application program and the database management system

D)

None of the above

Correct Answer : To specify the search criteria for a database query

Explanation : The SSA (Segment Search Argument) is used in an IMS DB system to specify the search criteria for a database query. It contains information about the segments and fields that should be searched, as well as the search criteria that should be used.

69 .

What is the purpose of the GU (Get Unique) command in an IMS DB system?

A)

To retrieve a specific record from the database

B)

To update a record in the database

C)

To retrieve the next record that matches a search criteria

D)

None of the above

Correct Answer : To retrieve a specific record from the database

Explanation : The GU (Get Unique) command is used in an IMS DB system to retrieve a specific record from the database. It is used when the application program knows the exact key value of the record that it wants to retrieve.

70 .

Which of the following specifies how the IMS database is organized and how an application may access it?

A)

IMS Control Blocks

B)

IMS process manager

C)

IMS transaction manager

D)

No

Correct Answer : IMS Control Blocks

Explanation : IMS Control Blocks specify how the IMS database is organized and how an application may access it.

71 .

Once all the segments have been established, ____ defines the whole physical structure of the database.

A)

Access Control Block (ACB)

B)

Program Specification Block (PSB)

C)

Database Descriptor (DBD)

D)

None of the above

Correct Answer : Database Descriptor (DBD)

Explanation : Once all the segments have been established, DBD defines the whole physical structure of the database.

72 .

Which of the following is responsible for creating control blocks?

A)

Database Validator

B)

Database Administrator

C)

Database Generator

D)

None of the above

Correct Answer : Database Administrator

Explanation : The Database Administrator is responsible for creating control blocks.

73 .

PSB consists of one or more control blocks called ________.

A)

ACB

B)

DBD

C)

DBGEN

D)

PCB

Correct Answer : PCB

Explanation : PSB consists of one or more control blocks called Program Communication Blocks (PCBs).

74 .

ACBGEN is known as ______.

A)

Access Control Blocks Generator

B)

Access common block generator

C)

Access communication block generator

D)

None of the above

Correct Answer : Access Control Blocks Generator

Explanation : ACBGEN is known as Access Control Blocks Generator.

75 .

Which of the following is used to generate ACBs?

A)

ACBGEN

B)

PCBGEN

C)

DBDGEN

D)

None of the above

Correct Answer : ACBGEN

Explanation : ACBGEN is used to generate ACBs.

76 .

Which of the following is coded at the end of the application program?

A)

Call Statement

B)

Entry Statement

C)

Goback Statement

D)

None of the above

Correct Answer : Goback Statement

Explanation : GOBACK is coded at the end of the application program.

77 .

GN code is used for the ______.

A)

Get new function

B)

Get next function

C)

Get number function

D)

All of the above

Correct Answer : Get next function

Explanation : 'GN' code is used for the Get Next function.

78 .

U command code is ignored if it is used with a ____ SSA.

A)

Qualified

B)

Unqualified

C)

Can Not Say

D)

None of the above

Correct Answer : Qualified

Explanation : U command code is ignored if it is used with a qualified SSA.

79 .

Concatenating keys is done using ____ command code.

A)

A

B)

C

C)

K

D)

P

Correct Answer : C

Explanation : Concatenating keys is done using C command code.

80 .

Which command code can be utilized to get multiple segment occurrences with only one call?

A)

A

B)

D

C)

P

D)

X

Correct Answer : D

Explanation : The D command code can be utilized to get multiple segment occurrences with only one call.

81 .

What is the purpose of the GNP (Get Next with Positioning) command in an IMS DB system?

A)

To update a record in the database

B)

To retrieve a specific record from the database

C)

To retrieve the next record that matches a search criteria

D)

None of the above

Correct Answer : To retrieve the next record that matches a search criteria

Explanation : The GNP (Get Next with Positioning) command is used in an IMS DB system to retrieve the next record that matches a search criteria. It is similar to the GN (Get Next) command, but also provides a way for the application program to specify the position in the database where the search should start.

82 .

What is a child segment in an IMS DB System?

A)

A segment that has no parent segment

B)

A segment that contains only one occurrence of a particular record type

C)

A segment that is descended from another segment through a parent-child relationship

D)

None of the above

Correct Answer : A segment that is descended from another segment through a parent-child relationship

Explanation : In an IMS DB system, a child segment is a segment that is descended from another segment through a parent-child relationship. It contains information that is related to the information in the parent segment, and may have one or more descendant segments of its own.

83 .

What is the purpose of the ISRT (Insert) command in an IMS DB system?

A)

To insert a new record into the database

B)

To update a record in the database

C)

To retrieve a specific record from the database

D)

None of the above

Correct Answer : To insert a new record into the database

Explanation : The ISRT (Insert) command is used in an IMS DB system to insert a new record into the database. It is used when the application program needs to add new information to the database.

84 .

What is the purpose of the REPL (Replace) command in an IMS DB system?

A)

To insert a new record into the database

B)

To update a record in the database

C)

To retrieve a specific record from the database

D)

None of the above

Correct Answer : To update a record in the database

Explanation : The REPL (Replace) command is used in an IMS DB system to update a record in the database. It is used when the application program needs to change information that is already in the database.

85 .

What is the purpose of the DLET (Delete) command in an IMS DB system?

A)

To delete a record from the database

B)

To insert a new record into the database

C)

To retrieve a specific record from the database

D)

None of the above

Correct Answer : To delete a record from the database

Explanation : The DLET (Delete) command is used in an IMS DB system to delete a record from the database. It is used when the application program no longer needs the information in the record and wants to remove it from the database.

86 .

What is a PSBGEN in an IMS DB system?

A)

A tool used to generate a database schema

B)

A tool used to generate a program from a PSB

C)

A tool used to generate a PSB from a program

D)

None of the above

Correct Answer : A tool used to generate a PSB from a program

Explanation : In an IMS DB system, a PSBGEN is a tool used to generate a PSB (Program Specification Block) from a program. It reads the program code and generates a PSB that specifies which database segments the program needs to access and how they should be accessed.

87 .

What is the maximum number of PCBs allowed in a PSB?

A)

1

B)

100

C)

255

D)

No Limit

Correct Answer : No Limit

Explanation : There is no limit of PCBs allowed in a PSB.

88 .

What does BMP stands for?

A)

Batch Manager Processing

B)

Batch Message Processing

C)

Batch Message Process

D)

None of the above

Correct Answer : Batch Manager Processing

Explanation : BMP stands for Batch Message Processing.

89 .

Which of the following Update functions are used in IMS DB?

A)

INSERT

B)

UPDATE

C)

DELETE

D)

All of the above

Correct Answer : All of the above

Explanation : The following Update functions are used in IMS DB :

* Insert
* Delete
* Replace

90 .

Which of the following code is used for the Insert function?

A)

INS

B)

ISRT

C)

INSRT

D)

INSERT

Correct Answer : ISRT

Explanation : ISRT code is used for the Insert function.

91 .

Which of the following function is used to add a new segment to the database?

A)

ADD

B)

ISRT

C)

CREATE

D)

APPEND

Correct Answer : ISRT

Explanation : ISRT function is used to add a new segment to the database.

92 .

Which of the following code is used for the Delete function?

A)

DEL

B)

DLETE

C)

DLET

D)

DELETE

Correct Answer : DLET

Explanation : 'DLET' code is used for the Delete function.

93 .

Which of the following is used to remove a segment from an IMS DL/I database?

A)

DLET

B)

DEL

C)

ERASE

D)

REMOVE

Correct Answer : DLET

Explanation : 'DLET' code is used for the Delete function. It is used to remove a segment from an IMS DL/I database.

94 .

Which code is used to replace a segment in the IMS DL/I database?

A)

SHIFT

B)

MOVE

C)

REPLACE

D)

REPL

Correct Answer : REPL

Explanation : REPL is used to replace a segment in the IMS DL/I database.

95 .

Which of the following code is used for the Restart function?

A)

XRST

B)

START

C)

SRTART

D)

RESTART

Correct Answer : XRST

Explanation : XRST code is used for the Restart function

96 .

The last byte of unqualified SSA always contains ______.

A)

Space

B)

Left parenthesis

C)

Right parenthesis

D)

None of the above

Correct Answer : Space

Explanation : The last byte of unqualified SSA always contains space.

97 .

What is the length of a standard unqualified SSA?

A)

2 bytes

B)

9 bytes

C)

10 bytes

D)

15 bytes

Correct Answer : 9 bytes

Explanation : The length of a standard, unqualified SSA is 9 bytes.

98 .

The first 8 bytes of unqualified SSA holds ______.

A)

White spaces

B)

The segment category which is being used for processing

C)

The segment name which is being used for processing.

D)

None of the above

Correct Answer : The segment name which is being used for processing.

Explanation : The first 8 bytes of unqualified SSA holds the segment name which is being used for processing.

99 .

What is a VSAM (Virtual Storage Access Method) dataset in an IMS DB system?

A)

A file that contains the database records

B)

A file that contains the structure of the database

C)

A program that is used to retrieve information from the database

D)

None of the above

Correct Answer : A file that contains the database records

Explanation : In an IMS DB system, a VSAM (Virtual Storage Access Method) dataset is a file that contains the database records. It is used to store the data for the database.

100 .

Which parameter specifies the language in which the application program is written in PSBGEN?

A)

WRITE

B)

LANG

C)

PSBNAME

D)

LANGUAGE

Correct Answer : LANG

Explanation : The LANG parameter specifies the language in which the application program is written, e.g., COBOL.