In IndexedDB, a transaction is a mechanism used to group database operations into atomic units of work. Transactions ensure data integrity and consistency by allowing multiple operations to be performed as a single, isolated unit. This means that either all operations within a transaction are successfully completed, or none of them are, preventing data corruption or inconsistencies.
Key characteristics of transactions in IndexedDB include :* Atomicity
* Isolation
* Consistency
* Durability
* Read and Write Operations
Transactions in IndexedDB are created explicitly by the application code and are typically scoped to a specific object store or a set of object stores within the database. Once a transaction is created, database operations (such as adding, retrieving, updating, or deleting data) are performed within the context of that transaction.
Example of starting a read-write transaction :
var transaction = db.transaction(["objectStoreName"], "readwrite");?
Example of starting a read-only transaction :
var transaction = db.transaction(["objectStoreName"], "readonly");?
Transactions are a fundamental aspect of IndexedDB's design, providing a mechanism for ensuring data integrity, consistency, and concurrency control in client-side web applications. They play a crucial role in maintaining a reliable and robust data storage system within the browser environment.
