Exam 2: Creating and Modifying Database Tables

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To view the column names and data types of the LOCATION table you would type DESCRIBE LOCATION;at the SQL*Plus prompt.

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A(n)____________________ number contains a variable number of decimal places.

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The CHAR data types stores up to 4,000 characters.

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A(n)____________________ constraint limits the value that can be placed in a specific column,irrespective of values that exist in other table rows.

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Define the two basic categories of SQL commands.

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Which of the following sql commands adds a new VARCHAR2 column of length 20 named new_column to table test?

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The Oracle DBMS stores columns of all data types in the same amount of space.

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Which of the following is not a legal table name according to the Oracle Naming Standard?

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Each SQL*Plus command is terminated with a(n)____.

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An Oracle error consists of a 3 letter prefix and a 5 digit code.

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Explain why it is a good idea to use Notepad or another editor to modify your sql commands rather than trying to edit them directly in the SQL*Plus window.Give at least two advantages of using the editor.

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To create a table it is only necessary to specify column names.

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Which of the following data types is used to store variable length ASCII character data?

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The CHAR and VARCHAR2 data types store Unicode character data.

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Which of the following declares a column named "name" that always contains exactly 30 characters?

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Which of the following is a legal character in the Oracle Naming Standard?

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Which of the following column data type changes is permitted?

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Which of the following is true when decreasing the maximum size of a CHAR column?

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Which of the following pieces of information about a table is not displayed when using the DESCRIBE command?

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Which of the following is not created using an integrity constraint?

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