Exam 7: Introduction to Structured Query Language (SQL)

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Any changes made to the contents of a table are not physically saved on disk until you use the SAVE <table name> command.

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You cannot insert a row containing a null attribute value using SQL.

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Using the ____________________ command,SQL indexes can be created on the basis of any selected attribute.

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Which query will output the table contents when the value of V_CODE is equal to 21344?

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The ANSI prescribes a standard SQL-the current fully approved version is known as SQL-07.

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SQL allows the use of logical restrictions on its inquiries such as OR,AND,and NOT.

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The SQL character data format(s)is(are)____.

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An alias is especially useful when a table must be joined to itself in a(n)____________________ query.

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The SQL aggregate function that gives the total of all values for a selected attribute in a given column is ____.

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What is a schema? How many schemas can be used in one database?

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When you issue the DELETE FROM tablename command without specifying a WHERE condition,____.

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To list the contents of a table,you must use the DISPLAY command.

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The ____________________ command,coupled with appropriate search conditions,is an incredibly powerful tool that enables you to transform data into information.

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If your integer values are relatively small,use ____________________ instead of INT.

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ANSI-standard SQL allows the use of special operators in conjunction with the WHERE clause.

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U.S.state abbreviations are always two characters,so ____________________(2)is a logical choice for the data type representing a state column.

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In SQL,all ____________________ expressions evaluate to true or false.

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The query to join the P_DESCRIPT and P_PRICE fields from the PRODUCT table and the V_NAME,V_AREACODE,V_PHONE and V_CONTACT fields from the VENDOR table,where the values of V_CODE match and the output is ordered by the price is ____.

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Some RDBMSs,such as Microsoft Access,automatically make the necessary conversions to eliminate case sensitivity.

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Only numeric data types can be added and subtracted in SQL.

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