Explain the working of foreign key?
What is data type in database?
trans_id trans_date trans_amt debit_credit_indicator 001 01-JAN-13 1099 cr 001 12-JAN-13 500 db 002 24-FEB-13 400 db 002 23-MAR-13 345 cr 001 18-APR-13 800 cr 002 15-MAR-13 600 db 001 12-FEB-13 200 cr i want like this output trans_id trans_date trans_amt debit_credit_indicator 001 JAN 1599 cr no.of trans 2 i want trans_id and trans_date like 'JAN' or 'FEB' etc, trans_amt i want all credit amount - debit amount per each trans_id. and debit_credit_indicator and no.of transactions in a month.
How do I start pl sql?
How would you hide a table in sql. ie the table can be only visible to its maker?
How does an execution block start and end in pl sql?
What is an emotional trigger?
Can i use Commit inside the Trigger? Suppose i use commit what will be happy (it's complied /executed/work)
what is the difference between mysql_fetch_array and mysql_fetch_object? : Sql dba
How many levels can subqueries be nested in a FROM clause?
What is a constraint?
What company owns postgresql?
What are inner and outer joins examples of both?