Exam 9: Data Design

_____ means that a system can be expanded,modified,or downsized easily to meet the rapidly changing needs of a business enterprise.

A common method of cardinality notation is called _____ because of the shapes,which include circles,bars,and symbols that indicate various possibilities.

Designing tables is easier if a _____ is used to show a table's structure,fields,and primary key.

The database and the Internet speak the same language.

Typically,a database management system is managed by a person called a _____,who assesses overall requirements and maintains the database for the benefit of an entire organization rather than a single department or user.

A _____,which is a framework for organizing,storing,and managing data,consists of files or tables that interact in various ways.

_____ is the process of creating table designs by assigning specific fields or attributes to each table in a database.

A primary key is composed of exactly two fields.

Briefly describe the seven coding methods used by companies with examples.

Most magazine subscription codes are action codes.

A logical record is a set of field values that describes a single person,place,thing,or event.

A table is in _____ if it does not contain a repeating group.

In an entity-relationship diagram,entities are commonly represented as _____.

A long integer format uses _____ bits to represent the number 1,234,567,890 in binary form.

Binary digits have only _____ possible value(s).

A _____ is a set of letters or numbers that represents a data item.

The inherent efficiency of high-volume processing on larger computers is called _____.

If a primary key combines two or more fields,then it is called a _____.

Cipher codes distinguish items by using a series of subgroups of digits.

_____ is designed to serve the needs of a specific department,such as sales,marketing,or finance.