Exam 2: The Relational Model 1: Introduction, QBE, and Relational Algebra

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What is the difference between an AND criterion and an OR criterion?

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Based on the tables below, which command creates a new table named CustSales that combines the Customer and SalesPerson tables based on SalesPersonNum??Customer (CustomerNum, CustomerName, Street, City, State, PostalCode, SalesPersonNum)?SalesPerson (SalesPersonNum, LastName, FirstName)

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In the Access Query window, the upper portion of the window contains the design grid.

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In relational algebra, what command causes only certain columns to be included in the new table?

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Which term is another word for a row in a table?

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Which of the following is the column or collection of columns that uniquely identifies a given row in that table?

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The compound criteria (conditions) are created by using which of the following two keywords?

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The relational operators are +, *, %, and /.

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How do you refer to a column named State in a table named Client?

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Which operation will allow you to extract data from more than one table?

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When some of the entries in a structure contain repeating groups and thus are not single-valued, the structure is called a(n) ____________________.

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List the six properties that define a relation in a two-dimensional table.

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A column whose value uniquely identifies a given row in the table is the secondary key.

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Which of the following is true if two tables have the same number of columns and their corresponding columns represent the same type of data?

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The attributes of an entity become the fields or columns in a table.

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The field on which records are sorted is called the composite primary key.

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What type of query changes data?

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The primary key of a table is the row or rows that uniquely identify a given column in that table.

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The concept of grouping means that statistics will be calculated for individual records.

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A query is a question represented in a way that the DBMS can recognize and process.

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