Exam 6: Introduction to SQL
Exam 1: The Database Environment and Development Process173 Questions
Exam 2: Modeling Data in the Organization121 Questions
Exam 3: The Enhanced E-R Model and Business Rules74 Questions
Exam 4: Logical Database Design and the Relational Model120 Questions
Exam 5: Physical Database Design and Performance105 Questions
Exam 6: Introduction to SQL119 Questions
Exam 7: Advanced SQL111 Questions
Exam 8: Database Application Development100 Questions
Exam 9: Data Warehousing117 Questions
Exam 10: Data Quality and Integration102 Questions
Exam 11: Data and Database Administration116 Questions
Exam 12: Distributed Databases109 Questions
Exam 13: Object-Oriented Data Modeling91 Questions
Exam 14: Using Relational Databases to Provide Object Persistence113 Questions
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What were the original purposes of SQL and does SQL as we know it today live up to those standards?
(Essay)
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The SQL command ________ defines a logical table from one or more tables or views.
(Multiple Choice)
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Count(*)tallies only those rows that contain a value,while Count counts all rows.
(True/False)
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What are some of the standard SQL functions that can be used in the select clause?
(Essay)
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What result set is returned from the following query?
Select customer_name,telephone
From customers
Where city in ('Boston','New York','Denver');
(Multiple Choice)
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The ORDER BY clause sorts the final results rows in ascending or descending order.
(True/False)
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The WHERE clause includes the conditions for row selection within a single table or view,and the conditions between tables or views for joining.
(True/False)
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What result will the following SQL statement produce?
Select Avg(standard_price)as average from product_v;
(Multiple Choice)
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The comparison operators ________ and ________ are used to establish a range of values in SQL.
(Short Answer)
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SQL has been implemented only in the mainframe and midrange environments.
(True/False)
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The structure that contains descriptions of objects created by a user,such as base tables and views is called a(n)________.
(Short Answer)
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________ is a set of commands used to control a database,which includes security.
(Multiple Choice)
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When a GROUP BY clause is included in an SQL statement,only those columns with a single value for each group can be included.
(True/False)
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What will be returned when the following SQL statement is executed?
Select driver_no,count(*)as num_deliveries
From deliveries
Where state = 'MA'
Group by driver_no;
(Multiple Choice)
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The following two SQL statements will produce different results.
Select last_name,first_name
from customer
where state = 'MA' or state = 'NY' or state = 'NJ' or state = 'NH' or state = 'CT';
Select last_name,first_name
from customer
where state in ('MA','NY','NJ','NH','CT');
(True/False)
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When using an expression in SQL,expressions inside the ________ will be calculated first.
(Short Answer)
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