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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The special operator used to check whether a subquery returns any rows is ____.
(Multiple Choice)
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A database language enables the user to perform complex queries designed to transform the raw data into useful information.
(True/False)
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In an INSERT command,you can indicate just the attributes that have required values by listing the ____________________ inside parentheses after the table name.
(Short Answer)
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A(n)____________________ order sequence is a multilevel ordered sequence that can be created easily by listing several attributes,separated by commas,after the ORDER BY clause.
(Short Answer)
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A(n)____________________ is performed when data is retrieved from more than one table at a time.
(Short Answer)
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Since computers identify all characters by their numeric codes,mathematical operators cannot be used to place restrictions on character-based attributes.
(True/False)
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UPDATE tablename
*****
[WHERE conditionlist];
The ____ command replaces the ***** in the syntax of the UPDATE command,shown above.
(Multiple Choice)
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An example of a command you would use when making changes to a PRODUCT table is ____.
(Multiple Choice)
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In a 1:M relationship,you must always create the table for the ____________________ side first.
(Short Answer)
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The most recent fully approved version of standard SQL prescribed by the ANSI 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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The ____ special operator is used to check whether an attribute value is null.
(Multiple Choice)
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The CHECK constraint is used to define a condition for the values that the attribute domain cannot have.
(True/False)
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The SQL aggregate function that gives the average for the specific column is ____.
(Multiple Choice)
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The SQL command that modifies an attribute's values in one or more table's rows is ____.
(Multiple Choice)
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If you add a new column to a table that already has rows,the existing rows will default to a value of ____________________ for the new column.
(Short Answer)
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