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FDA states heavy workload and limited resources prevent meeting PDUFA goal date of June 17 Agency indicates anticipated decision within four weeks CAMBRIDGE, Mass. & SALISBURY, England-- (BUSINESS ...
The NOT NULL constraint is used to prevent null values from being entered into one or more columns within a table, thereby sustaining data integrity IBM. It is essential to apply NOT NULL constraints ...
Constraint/SQL -- Constraint drop table snapdeal_orders; create table snapdeal_orders ( order_Id int not null, -- now we can not add null value in column order_id , not null constraint order_date date ...
Constraints in sql are used to define rules for the table and columns in a database and also make sure that data are accurate and trusted in the database. constraints are responsible for the ...
SQL PRIMARY KEY Constraint The primary constraint is just like unique constraint both uniquely identifies a field or record in database, but the major difference is that primary key should not be null ...
DBDetective for Oracle is a metadata mining tool for detecting and correcting possible violations of some crucial database (db) design, implementation, usage, and optimization best practice rules ...
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