How can the performance of a trigger be improved?
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What is primary key and foreign key with example?
Can a key be both primary and foreign?
what does it mean to have quoted_identifier on? : Sql dba
what is a foreign key ? : Sql dba
How we get all_group_function's(Sum,avg,count,max and min_value of a column(Sal) Using pl/sql anonymous block, with out using group function's. You shouldn't use more than one select statement in entire the program. Like cursor c is select * from <table_name>; except this you can't use another select statement. You can use no of variables as per requirement.
What is the difference between clustered and non-clustered index in sql?
Can a table contain multiple foreign key’s?
Explain character-manipulation functions?
What are the different types of database management systems?
What is the difference between local variables and global variables?
What is the difference between functions, procedures, and packages in pl/sql?
What is difference between my sql and sql?
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