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In case of entity integrity, the primary key may be declared?
In a case of entity integrity primary key may be not Null.
Define Aggregate functions and what aggregate functions supported by the MySQL To calculate a summary value from a set of individual values and uses one of the functions known
Implementing software control To implement software control designer must redesign strategy of state event model which is present in dynamic model. There are three basic ap
What function divides one numeric expression by another and returns the remainder? MOD function divides one numeric expression by another and returns the remainder.
We require an advanced system for a Sports Centre, you are concerned only with representing the data discussed below about bookings and members. (The complete system may contain ot
How many physical thing?
What is view in SQL? How is it defined? Any relation that is not part of the logical model, but is made visible to a user as a virtual relation is known as a view. We descri
Create a view emp_dep containing e_name and number of dependents from the tables employee and dependent of (i) CREATE VIEW emp_dept AS SELECT ename, COUNT(*) FROM employee, dep
Describe disk manager and their work? Disk Manager: Responsible for fetching data regulated through file Manager from disk storage within Main memory and deciding what data to
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