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What are primary keys and foreign keys?
Primary keys are the unique identifiers for every row. They must have unique values and cannot be null. Due to their significance in relational databases, Primary keys are the most fundamental of all keys and constraints. A table can have only one Primary key. Foreign keys are both a method of ensuring data integrity and a manifestation of the relationship among tables.
Explain the Client- Server Interface Using Procedures Developers must realize that client-server impose a division of labor in application programs. Programs must be broken up
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Conversion of decimal number 25.5 into binary number Ans. There is integer part is 25 and fractional part is 0.5. Firstly convert the integer part 25 in its equal to binary numb
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Computers manipulate numbers - but decimalnumbers with digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 cannot be represented using two states of a digitalcircuit.Instead decimal numbers are co
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Al l exceptions in Java are subclasses of built in class called? Each exception in Java are subclasses of make in class termed as Throwable.
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