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Suppose an instruction takes 1 nanosecond to execute (on average), a page fault takes 20 microseconds of processor time, and it takes 300 microseconds of disk time to read or write
crete a data base relationship model Entity: Students; Professors; Dormitories buildings; Attributes of students: Name; Address; Dorm;
In Database software have only pure security or some dis secured by administrator?
SET concept is used in which type of modelling? SET concept is used in Network Model.
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
Why were functional methods fashionable in early days? These are inspired directly by computer architecture and thus popular among computer scientist in early days. The divisio
properties of derirable decomposition
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
List the string operations supported by SQL? 1) Pattern matching Operation 2) Concatenation 3) Extracting character strings 4) Converting among uppercase and lower cas
what is relationship inheritance and attribute inheritance
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