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Explain CNT in the respects of QBE ?
CNT: It is one of the aggregation commands given in QBE. It is used to identify number of tuples
What are the causes of bucket overflow in a hash file organization? What can be done to reduce the occurrence of bucket overflow? When a record is inserted, the bucket to that
Define Atom of domain relational calculus An atom has the outline 1 , x 2 , ... , x n > -> r , in which r stands for a relation on n attributes and x 1 , x 2 , ... , x n ar
I want to fragment existing table using java code... help me..!!
courier company er-diagram
Question 1 Explain the concept of database recovery management. Explain the different levels of backup used for recovering data Question 2 What are the different types of par
Define Physical and Logical independence Ans: Physical data independence: The ability to modify physical level without causing application program to be rewritten. Logic
Using Literal Character String Example: To print IS A as one string with column name employee SELECT ENAME || ' IS A ' || JOB AS "EMPLOYEE" FROM EMP;
If one requires to access data using Logical Database , the use of events is unavoidable. Yes, if someone wants to access data using Logical database then the use of events
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
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