Chapter 12 Matching

Match the definitions with the terms in the box to the right by entering the letter for each term next to its correct definition below. When you are finished, check your answers. You can refresh this page to try a new matching activity.

a. batch processing
b. class
c. common data item
d. common operational database
e. data model
f. firewall
g. hierarchical database
h. logical view
i. multidimensional database
j. object-oriented database

1.Processing performed all at once on data that have been collected over time.
2.In an object-oriented database, classes are similar objects grouped together.
3.In a relational database, all related tables must have a common data item or key field.
4.Contains details about the operations of the company, such as inventory, production and sales.
5.Defines rules and standards for all data in a database. There are five data models: hierarchical, network, relational, multidimensional, and object-oriented. For example, Access uses the relational data model.
6.Security hardware and software. All communications into and out of an organization pass through a special security computer called a proxy server in order to protect all systems against external threats.
7.Database in which fields or records are structured in nodes. Organized in the shape of a pyramid and each node is linked directly to the nodes beneath them. Also called one-to-many relationship.
8.Focuses on the meaning and content of the data. End users and computer professionals are concerned with this view as opposed to the physical view in which only specialized computer professionals are concerned.
9.Data can be viewed as a cube having three or more sides consisting of cells. Each side of the cube is considered a dimension of the data, thus complex relationships between data can be represented and efficiently analyzed. Sometimes called hypercube and designed for analyzing large groups of records.
10.A more flexible type of database that stores data as well as instructions to manipulate data and is able to handle unstructured data, such as photographs, audio and video. Object-oriented databases organize data using objects, classes, entities, attributes, and methods.

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