What are commit, rollback, and savepoint?

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How can I see all tables in sql?

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Where is pl sql used?

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When the mutating error will comes? and how it will be resolved?

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1. how to use the check option constraints in sql query..? 2.how to add data in a complex query ? 3.is it possible to use commit or rollback or savepoint in triggers...if not why please explain with examples...? 4.what is the difference between meterialized view and normal view..how to create materialized view and how to use it..? 5.what is varray...? what is the advantage of the varray ? please expalin with a simpel example..i want to load into a table (student no and name and his marks..) please give example.. 6.what are the bulk bind exceptions...how to use bulk bind and how to use bulk collect..please explain with example... 7.what is for update of and where current of ...? 8 what is the use of nowait ? 9.please give an example for nocopy in a simple plsql query 10.create an index in a table...tellme how to use the index in a where clause to do performance tunning...

3 Answers   Satyam,

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What does the base_object_type column shows in the user.triggers data dictionary view?

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What is the difference between unique and primary key constraints?

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describe mysql connection using mysql binary. : Sql dba

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What do you mean by field in sql?

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What is #table in sql?

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Can a varchar be a primary key?

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Why do we use sql constraints? Which constraints we can use while creating database in sql?

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