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Database Management SystemConsider the following action : TRANSACTION..... Commit; ROLLBACK; What does rollback do? (i) Undoes the transactions before commit (ii) Clears all transactions (iii) Redoes the transactions before commit (iv) No action20202mDatabase Management SystemBriefly explain the ACID properties of the transactions to ensure integrity of the data.20227mDATABASE MANAGEMENT SYSTEMSerializability of concurrent transaction is ensured by - (i) locking - (ii) time stamping - (iii) both (a) and (b) - (iv) none of these20232mDATABASE MANAGEMENT SYSTEMThe ability to query data, as well as insert, delete, and alter tuples, is offered by: - (i) TCL (Transaction Control Language) - (ii) DCL (Data Control Language) - (iii) DDL (Data Definition Language) - (iv) DML (Data Manipulation Language)20242m
PreviousWhich of the following is true? - (i) B+ tree allows only the rapid random access (ii) B+ tree allows only the rapid sequential access (iii) B + tree allows rapid random access as well as rapid sequential access (iv) B + tree allows rapid random access and slower sequential accessNextWhich of the following is used at the end of the view to reject the tuples which do not satisfy the condition in where clause? - (i) With (ii) Check (iii) With check (iv) All of the above
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