what is data abstraction
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Answer / poonam
The system hides certain details of how data is stored and created and maintained
Complexity should be hidden from database users.this is data abstraction
| Is This Answer Correct ? | 12 Yes | 1 No |
Answer / vikash kumar gupta
provide the essential information without include the back
ground detail.
| Is This Answer Correct ? | 0 Yes | 0 No |
if i am using dml statement in function. then i am writing select statement what was the output
what is integrity constrains?
What is a Public Synonyms ?
What is the difference difference between $ORACLE_HOME and $ORACLE_BASE.
how can find the second max sal for every group(i.e i want group the data based on key and find the second max sal for every group
What is connection pooling in oracle?
What is Database Buffers ?
Query to retrieve record for a many to many relationship ?
What are the factors causing the reparsing of SQL statements in SGA?
I have a table emp. There is only one column in the table. In that , there are only three rows in that column. The value in the first row is 'A' and the value in the second row is 'B' and the third row is 'C'. Now, my question is , How will you write a select query to display the output as B C A Note: order by cannot be used coz it gives us output as CBA. But the output should be BCA.
Why do we need integrity constraints in a database?
What is Parallel Server ?