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 The SQL statementSELECT SUBSTR('123456789', INSTR('abcabcabc', 'b'), 4) FROM DUAL; 2345 1234 456789 6789 2345 1234 456789 6789 ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL A view is which of the following? A virtual table that can be accessed via SQL commands A virtual table that cannot be accessed via SQL commands A base table that cannot be accessed via SQL commands A base table that can be accessed via SQL commands A virtual table that can be accessed via SQL commands A virtual table that cannot be accessed via SQL commands A base table that cannot be accessed via SQL commands A base table that can be accessed via SQL commands ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL A subquery in an SQL SELECT statement is enclosed in: CAPITAL LETTERS. parenthesis -- (...) . brackets -- [...]. braces -- {...}. CAPITAL LETTERS. parenthesis -- (...) . brackets -- [...]. braces -- {...}. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The wildcard in a WHERE clause is useful when? An exact match is necessary in a SELECT statement. An exact match is not possible in a SELECT statement. An exact match is not possible in a CREATE statement. An exact match is necessary in a CREATE statement. An exact match is necessary in a SELECT statement. An exact match is not possible in a SELECT statement. An exact match is not possible in a CREATE statement. An exact match is necessary in a CREATE statement. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The wildcard asterisk (*) is the SQL-92 standard for indicating "any sequence of characters." True False True False ANSWER DOWNLOAD EXAMIANS APP
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