Exam 7: Introduction to Structured Query Language (SQL)
Exam 1: Database Systems70 Questions
Exam 2: Data Models70 Questions
Exam 3: The Relational Database Model100 Questions
Exam 4: Entity Relationship (ER)Modeling100 Questions
Exam 5: Advanced Data Modeling70 Questions
Exam 6: Normalization of Database Tables100 Questions
Exam 7: Introduction to Structured Query Language (SQL)100 Questions
Exam 8: Advanced SQL100 Questions
Exam 9: Database Design100 Questions
Exam 10: Transaction Management and Concurrency Control70 Questions
Exam 11: Database Performance Tuning and Query Optimization70 Questions
Exam 12: Distributed Database Management Systems70 Questions
Exam 13: Business Intelligence and Data Warehouses100 Questions
Exam 14: Database Connectivity and Web Technologies100 Questions
Exam 15: Database Administration and Security100 Questions
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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.
(True/False)
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You cannot insert a row containing a null attribute value using SQL.
(True/False)
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Using the ____________________ command,SQL indexes can be created on the basis of any selected attribute.
(Short Answer)
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Which query will output the table contents when the value of V_CODE is equal to 21344?
(Multiple Choice)
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The ANSI prescribes a standard SQL-the current fully approved version is known as SQL-07.
(True/False)
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SQL allows the use of logical restrictions on its inquiries such as OR,AND,and NOT.
(True/False)
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An alias is especially useful when a table must be joined to itself in a(n)____________________ query.
(Short Answer)
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The SQL aggregate function that gives the total of all values for a selected attribute in a given column is ____.
(Multiple Choice)
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When you issue the DELETE FROM tablename command without specifying a WHERE condition,____.
(Multiple Choice)
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To list the contents of a table,you must use the DISPLAY command.
(True/False)
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The ____________________ command,coupled with appropriate search conditions,is an incredibly powerful tool that enables you to transform data into information.
(Short Answer)
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If your integer values are relatively small,use ____________________ instead of INT.
(Short Answer)
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ANSI-standard SQL allows the use of special operators in conjunction with the WHERE clause.
(True/False)
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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.
(Short Answer)
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In SQL,all ____________________ expressions evaluate to true or false.
(Short Answer)
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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 ____.
(Multiple Choice)
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Some RDBMSs,such as Microsoft Access,automatically make the necessary conversions to eliminate case sensitivity.
(True/False)
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