Exam 3: Structured Query Language
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In Microsoft Access,tables are added to a QBE Query window by selecting the tables from the ________ dialog box.
(Short Answer)
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When using SQL to create a table,a column is defined by declaring,in this order: data type,column name,and optional constraints.
(True/False)
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A complete table,including both the table structure and any data in the table,can be removed from the database by using the SQL ________ command.
(Short Answer)
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The basic idea of a join is to combine the contents of two or more relations into a new relation.
(True/False)
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In SQL,the LIKE keyword can be used to select on partial values.
(True/False)
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Conditions after the WHERE keyword require single quotes around the values for columns that have which data type?
(Multiple Choice)
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The SUM built-in function in SQL is used to total the values in a numeric column.
(True/False)
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One way to specify all of the columns of a table is to use the special character * after the SQL keyword ________.
(Short Answer)
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Values of existing data can be changed using SQL through the CHANGE command.
(True/False)
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Referential integrity constraints can be created using the ON DELETE phrase when the table is created using the CREATE TABLE statement.
(True/False)
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Data from a maximum of three tables can be combined through the use of subqueries in SQL.
(True/False)
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Given the table
What is the standard SQL query phrase to retrieve data for customers with an account balance greater than 50?
(Multiple Choice)
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To force the DBMS to remove duplicate rows from the results of an SQL SELECT query,the keyword DISTINCT must be used.
(True/False)
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Conditions in an SQL INSERT command and after the SQL ________ keyword require single quotes around values for Char and VarChar columns,but not around values for Integer and Numeric columns.
(Short Answer)
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Which of the following is the correct SQL clause to sort the results of a SELECT query in reverse-alphabetic order using the Department field?
(Multiple Choice)
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For a column to be defined as the primary key using table constraints,the column must have been given the property NULL.
(True/False)
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Given the table ,which of the following SQL statements would be used to add new student data to the STUDENT table?
(Multiple Choice)
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