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external and internal mapping with examples
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Demonstrate your knowledge of PL/SQL programming by writing and thoroughly testing triggers and stored procedures associated with an e-commerce application that provides security l
What is Specialization? Specialization: Specialization permits you to describe new types of information (new structural types or latest domains of information), although reusin
Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID
Can you assist me in Database management system? I need help in my courses, please email me at and get back me soon...
What are aggregate functions? And list the aggregate functions supported by SQL? Aggregate functions are functions that take a collection of values as input and return a one va
How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
Give detail description on Transactions. - Using transactions we can group all SQL commands into a single unit. - Transaction begins with some task and finishes only when a
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
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