What happens if variable names collide with table/column names?
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What is the maximum number of CHECK constraints that can be defined on a column ?
What is oracle database 10g express edition?
Can a primary key contain more than one columns?
can a view be updated?
Explain the use of owner option in exp command.
Can Multiple instances be run on Single Machine???
1) What is dense ranking? 2) Difference between Substring and Instring? 3) Case and Decode? 4) Pseudo column? 5) View vs Materialized views? 6) SQl performance tuning?
How to see free space of each tablespace?
What does `(+)` do in a where clause?
What is system tablespace?
Given two table employee and department EMP ---------------- empid deptid(fk) Dept --------------------- deptid(pk) deptname que-Write a query to find count of employee in each department. Expected Output- deptid countofEmployee --------------------------- 10 57 20 20 30 15
Describe the different type of Integrity Constraints supported by ORACLE ?