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What is recovery management component?
Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
Data Replication "If a relation R has its copies kept at two or more sites, then it is considered replicated". But why do we replicate a relation? There are several advan
Why 'AS' clause is used in SQL ? 'As' clause is used for Rename operation. ‘AS' clause is used in SQL for rename operation. (e.g., SELECT ENO AS EMPLOYEE_NO FROM EMP)
The Concurrent Transactions Almost every commercial DBMS support multi-user environment. Therefore, allowing multiple transactions to proceed concurrently. The DBMS must make
Which is a legal expression in SQL? SELECT NAME FROM EMPLOYEE is a legal expression in SQL.
#explain five disadvantages of a dbms..
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
Define what Immediate database modification technique uses? Ans: Both undo and redo.
Explain data abstraction? Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is
Construct a generalization-specialization hierarchy for a motor-vehicle sales company. The company sells motorcycles that comprise an engine number and cost; cars that have a chass
Design a gennalization and specialization hierarchy for an automobile sales company
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