What are triggers, and when would you use them?

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What are its different types of dbms?

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Is truncate ddl or dml?

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how to select alphabets in a one column , for this the table name is PA_TASKS and column name is TASK_NUMBER, In TASK_NUMBER the data like this 1.1.3NN,1.1.4NN,1.5.1NN,1.3.2NE,1.5NN,1NN,1.2NE,1CE , For this i need to disply output as NN,NN,NN,NE,NN,NN,NE,CE, Its some urgent requirement ,thanks in advance

6 Answers  

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Does oracle use sql?

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i hv 30 rows with date.ex:1month hav 4 weeks i want 1st day of the every week.write the qry for that.example jan has 4 weeks i need 1st dd for evry wk

1 Answers   Aspire,

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How does cross join work in sql?

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How to get each name only once from an employee table?

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what is data manipulation language? : Sql dba

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wtite down triggr not any entry on Sunday

2 Answers   NIT,

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Name the operator which is used in the query for pattern matching?

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What is a trigger in pl/sql?

1 Answers  

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