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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 operand. Nulls cannot be equated. Nulls can be checked through containment by using IS NULL or IS NOT NULL operators.
List the SQL domain Types? SQL supports the following domain types. 1) Char(n) 2) varchar(n) 3) int 4) numeric(p,d) 5) float(n) 6) date.
Define single valued and multivalued attributes. Single valued attributes: attributes with a single value for a particular entity are known as single valued attributes. Mult
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
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I need web security expert , website management Project Description: i want professional for the below . website management server management database management
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