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Differentiate between a unique key and a primary key.
- By default, clustered index on column are created by primary key while nonclustered index are created by unique key.
- Primary key doesn't allow NULLs however unique key allows one NULL.
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
Describe the algorithm for updating indices for a single level index when a record is (i) Inserted (ii) deleted What will be the modification if there are multilevel in
Normalize the following table upto and including the 3NF. Submit a 1 page printout of only the final set of normalized tables in Data Architect. Just use Data Architect to do the t
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
please i request for your assistance in developing a case-based online phone repair
What is the use of keyword ISA? The use of keyword ISA is to show that a class is a specialization of another class.
Define the categories of SQL Statements? 1) Statements that don't return a result set. This statement class includes INSERT, DELETE, and UPDATE. 2)Statements that return
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
distributed quey processing
10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the
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