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Database Transactions Quiz

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Questions and Answers

Which of the following is NOT a database operation that forms a transaction?

Deletion

Join (correct)

Update

Insertion

Where can the database operations forming a transaction be specified?

Both within an application program and interactively via a high-level query language (correct)

Only interactively via a high-level query language

Only within an application program

Through direct manipulation of the database

What is a transaction in the context of database processing?

A logical unit of database processing that includes one or more database access operations (correct)

A physical unit of work on the database

A set of unrelated database operations

A singular database access operation

In the context of database processing, what is the purpose of specifying explicit begin transaction and end transaction statements in an application program?

To mark a group of database access operations as forming one transaction Signup and view all the answers

How are database access operations between explicit begin transaction and end transaction statements considered?

As forming one transaction Signup and view all the answers

Can a single application program contain more than one transaction if it contains several transaction boundaries?

Yes, it can contain multiple transactions Signup and view all the answers

Study Notes

Database Transactions

A transaction in database processing is a sequence of operations that are treated as a single unit. It ensures data integrity and consistency.
Common database operations that form a transaction include INSERT, UPDATE, DELETE, and SELECT. Operations not typically included may be trivial tasks that do not affect data integrity.

Transaction Boundaries

Explicit BEGIN TRANSACTION and END TRANSACTION statements delineate the start and end of a transaction, allowing for clear definition of transactional boundaries within application programs.
Operations executed between BEGIN TRANSACTION and END TRANSACTION statements are considered part of that transaction. These operations are subject to the ACID properties (Atomicity, Consistency, Isolation, Durability).

Multiple Transactions

A single application program can contain multiple transactions, each defined by separate transaction boundaries. This allows for complex operations while maintaining logical separation and data integrity throughout the program.

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Description

Test your knowledge of database transactions with this quiz. Explore the concepts of insertion, deletion, modification, and retrieval operations within a logical unit of work. Dive into the details of how transactions can be embedded within application programs or specified interactively via high-level query languages.