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22 Cards in this Set
- Front
- Back
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When you create an index whose key is a single-field, you have createdwhat type of index
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single-gield index and single-column index D. both A and B are correct
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Whey you create an index that contains multiple fields, it is also known as what
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D. a and c are correct.multiple field index and multiple column index
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What is the preventio of unauthorized access to the datebase
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security
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WhICH command will grant SELECT rights to user Franklin fo the Rep table
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A. GRANT SELECT ON REP TO FRANKLIN
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When you create an index whose key is a single-field, you have createdwhat type of index
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single-gield index and single-column index D. both A and B are correct
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When a primary ckey cannot allow null values, this restriction is called what
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D. entitiy integrity
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A field or collection of vields in a table whose value is required to match the value of a primary key for a second table is known as a
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A. foreign key
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Waht is the name of the rule taht states that if table A contains a foreign key that matches the primarykey of table B, the values of this foreign must either match the value of the primary key for some row in table B or be null?
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B. referential integrity
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To create teh primary key clause for the Customer table on teh CustomerNum field, which of the following is correct
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A. PRIMARY KEY (CustomerNum)
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You can specify the Foreign key clause in which of the following commands
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A. Alter table.
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Which command will remove an index?
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C. Drop
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An advantage of a view is to
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D. all of above are correct
provide independence allow different users to view the same data different ways have the view contain only those fields required by a given users |
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The main mechanishm for increasing teh effciency with which dat is retrieved from teh database is known as teh what
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A. index
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Which of the following statements is true when a view is created from a table
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B. Column names in the view need not e the same as the table.
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The select command of a CREATE VIEW statement is also called what
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A. the defining query
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After creating a view using two table, we must use which clause to join both tables together
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C. where
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After creating a view, you must use which command to see the fields and rows
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D. SELECT
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a table that possesses a certain desirable collection of properties is known as being
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A. relations
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Which table contains infomation about the actual indexesthat are defined on teh tables in teh DBMS
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C. Sysindexes
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Which normal form has the additional condition that no nonkey column is dependent on oly a portion ot the primary key
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B. second
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Which normal form is automatically plced into this category if the primary key contains a single column
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B. second
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What is naother name for a nonkey column is a
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A. nonkey attribute
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