What is a sequence and write its syntax

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Reference no: EM131529165

Question: 1. What string function should you use to list the first three characters of a company's EMP_LNAME values? Give an example using a table named EMPLOYEE. Provide examples for Oracle and SQL Server.

2. What is a sequence? Write its syntax.

3. What is a trigger, and what is its purpose? Give an example.

Reference no: EM131529165

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