Introduction to SQL What operator tests column for the absence of data? EXISTS operator NOT operator None of these IS NULL operator EXISTS operator NOT operator None of these IS NULL operator ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Indexes can usually be created for both primary and secondary keys. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following is the original purpose of SQL? To specify the syntax and semantics of SQL data definition language All of these To specify the syntax and semantics of SQL manipulation language To define the data structures To specify the syntax and semantics of SQL data definition language All of these To specify the syntax and semantics of SQL manipulation language To define the data structures ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Data manipulation language (DML) commands are used to define a database, including creating, altering, and dropping tables and establishing constraints. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs FLASE TRUE Hi Nothing FLASE TRUE Hi Nothing ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL statement: SELECT Number1 + Number 2 AS Total FROM NUMBER_TABLE; adds two numbers from each row together and lists the results in a column named Total. False True False True ANSWER DOWNLOAD EXAMIANS APP
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