What is the difference between a primary key & a unique key?
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Explain the use of log option in exp command.
How data locks are respected in oracle?
Explain an exception?
Can an Integrity Constraint be enforced on a table if some existing table data does not satisfy the constraint ?
24. Display the order number for all orders whose average item cost is greater than the overall average item cost across all orders.
what are the advantages of running a database in NO archive log mode?
how to retrieve 1st and last row of table without using group functions??
Is java required for oracle client?
Explain oracle’s server parameter file.
what is host string in sql plus? how does it related to database?
What is translate in oracle?
Can a Tablespace hold objects from different Schemes ?