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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The WHERE clause is always processed before the GROUP BY clause when both occur in a SELECT statement.
(True/False)
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The ________ is a set of commands used to maintain and query a database.
(Short Answer)
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What result set will the following query return?
Select item_no,description
From item
Where weight > 100 and weight < 200;
(Multiple Choice)
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What does the following SQL statement do?
Update Product_T
Set Unit_Price = 775
Where Product_ID = 7
(Multiple Choice)
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The DROP TABLE command causes tables to be ________,________,and ________ from the database.
(Short Answer)
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The following query totals sales in state= 'MA' for each salesperson.
Select salesperson_id,sum(sales)
from salesperson
group by salesperson_id
having state = 'MA';
(True/False)
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The ________ SQL command defines a logical table from one or more tables.
(Short Answer)
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When creating tables,it's important to decide which columns will allow null values before the table is created.
(True/False)
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A referential integrity constraint specifies that the existence of an attribute in one table depends upon the existence of a foreign key in the same or another table.
(True/False)
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A(n)________ is a set of schemas put together that represent a database description.
(Short Answer)
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The following two SQL statements will produce the same results.
Select last_name,first_name
from customer
where credit_limit > 99 and credit_limit < 10001;
Select last_name,first_name
from customer
where credit_limit between 100 and 10000;
(True/False)
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Which of the following is the wildcard operator in SQL statements?
(Multiple Choice)
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To get all the customers from Hawaii sorted together,which of the following would be used?
(Multiple Choice)
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A single value returned from an SQL query that includes an aggregate function is called a(n):
(Multiple Choice)
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The following query totals sales for each salesperson.
Select salesperson_id,sum(sales)
from salesperson
group by salesperson_id;
(True/False)
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