Welcome to the SQL Queries,Constraints and Triggers MCQs Page
Dive deep into the fascinating world of SQL Queries,Constraints and Triggers with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of SQL Queries,Constraints and Triggers, a crucial aspect of DBMS. In this section, you will encounter a diverse range of MCQs that cover various aspects of SQL Queries,Constraints and Triggers, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within DBMS.
Check out the MCQs below to embark on an enriching journey through SQL Queries,Constraints and Triggers. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of DBMS.
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SQL Queries,Constraints and Triggers MCQs | Page 6 of 17
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This SQl query selects
SELECT name
FROM instructor
WHERE salary IS NOT NULL;
SelectsSome of these insert statements will produce an error. Identify the statement.
CREATE TABLE employee (id INTEGER,name VARCHAR(20),salary NOT NULL);
INSERT INTO employee VALUES (1005,Rach,0);
INSERT INTO employee VALUES (1007,Ross, );
INSERT INTO employee VALUES (1002,Joey,335);SELECT nvl (100 / quantity, NONE)
FROM inventory;
Why does this statement cause an error when QUANTITY values are null?
SELECT __________
FROM instructor
WHERE dept name= ’Comp. Sci.’;Suggested Topics
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