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Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
How nulls are treated in comparison operator? Along with comparison (relational) operators, the null values are ignored as we cannot derive the relation along with the given op
What is a Built-in A notation of identity is built-into the data model or programming language and no user-supplied identifier is needed. This form of identity is used in objec
How to draw an ER diagram to a finance companz
What is a relationship called when it is maintained between two entities? A relationship is called Binary relationship when it is maintained between two entities.
I have to solve a problem using access
courier company er-diagram
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
What are the problems if one were not to normalize? When do these problems surface? Ans: Database normalization, sometimes considered to as canonical synthesis, is
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
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