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What is the purpose of using transactions in DBMS?
What is the purpose of using transactions in DBMS?
- To improve system performance
- To increase the number of steps in a program
- To protect user data from system failures (correct)
- To reduce the cost of maintaining transaction logs
What is the main purpose of using transactions in DBMS?
What is the main purpose of using transactions in DBMS?
- To save storage space
- To protect user data from system failures (correct)
- To increase the system's speed
- To reduce the number of steps in executing a program
What are the different states of a transaction?
What are the different states of a transaction?
- Active, partially committed, and committed (correct)
- Active, partially committed, and aborted
- Active, committed, and rolled back
- Active, committed, and aborted
What are the different states of a transaction?
What are the different states of a transaction?
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What is the main use of transaction management in DBMS?
What is the main use of transaction management in DBMS?
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What is the disadvantage of using a transaction in DBMS?
What is the disadvantage of using a transaction in DBMS?
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Study Notes
- Transactions are a set of operations used to perform a logical set of work.
- They are used to protect user data from system failures in DBMS.
- Transactions contain a finite number of steps and executing the same program multiple times generates multiple transactions.
- Transactions can be implemented using SQL queries and servers.
- ACID properties are desirable for a transaction to be performed in DBMS.
- Transactions have different states such as active, partially committed, and committed.
- Serializability is important to maintain database consistency.
- Schedules are used to line up transactions and execute them one by one.
- The main use of transaction management is to ensure data consistency and integrity.
- The disadvantage of using a transaction is the overhead cost of maintaining transaction logs.
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