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Example of Shorthand for a row constraint
Example: Shorthand for a row constraint
ALTER TABLE EXAM_MARK
ADD CONSTRAINT Mark_in_range
CHECK (Mark BETWEEN 0 AND 100);
Actually, it's not quite the only way. The constraint can be included in the column definition for Mark in the CREATE TABLE statement for EXAM_MARK, as shown in Example. A constraint declared as part of a column definition is called a column constraint.
Authorisations - Privileges As relational theory is silent on the issue of authorisation, it offers nothing with which SQL's vast edifice in support of what it calls privilege
Need Database Development with Analysis Tools Project Description: I want a database for large governmental and private data sets on one country that can be simply extended t
Sequential Control Dissimilar to the IF and LOOP statements, the GOTO and NULL statements are not important to the PL/SQL programming. The configuration of PL/SQL is such that th
Hi,am developing a library system and relating all the table is somehow complex,could you kindly assist me
what is the use of declare keyword
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