What is the exact use of Collections?
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can anyone help me ? an index has been done on the primary key of a table. an update operation was performed on that table. now my question is 1> what abt the performance ? means faster or slower due to indexing ? 2> does the operation affect to the primary key constraint ?
what are the different types of cursors? explain?
what is difference between foreign key and reference key
How to shutdown your 10g xe server from command line?
2. Display the post code and the total number of purchase orders placed with creditors in that post code.
What does a Control file Contain ?
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what is the difference between functional dependecy and multilevel dependency?
What is trigger associated with the timer ?
How to assign a table row to a record variable?
How to define a data field as not null?
How to get last row id?