Introduction to SQL Most companies keep at least two versions of any database they are using. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following SQL query is correct for selecting the name of staffs from 'staffinfo' table where salary is 10,000 or 25,000? SELECT name FROM staffinfo WHERE salary IN (10000, 25000); SELECT name FROM staffinfo WHERE salary BETWEEN 10000 AND 25000; None of these Both A and B SELECT name FROM staffinfo WHERE salary IN (10000, 25000); SELECT name FROM staffinfo WHERE salary BETWEEN 10000 AND 25000; None of these Both A and B ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Scalar aggregate are multiple values returned from an SQL query that includes an aggregate function. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables? Data Definition Language(DDL) Data Manipulation Language(DML) Both of above None Data Definition Language(DDL) Data Manipulation Language(DML) Both of above None ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery. True False True False ANSWER DOWNLOAD EXAMIANS APP
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