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POS 410 Week 1 DQ 1

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Week #1 DQ 1 - How would you define a relational database?
A relational database matches data by using common characteristics found within the
data set. The resulting groups of data are organized and are much easier for many people to
understand. For example, a data set containing all the real-estate transactions in a town can be
grouped by the year the transaction occurred; or it can be grouped by the sale price of the
transaction; or it can be grouped by the buyer's last name; and so on. Such a grouping uses
the relational model. Hence, such a database is called a "relational database." The software used
to do this grouping is called a relational database management system (RDBMS). The term
"relational database" often refers to this type of software. Relational databases are currently the
predominant choice in storing financial records, manufacturing and logistical information,
personnel data and much more. Strictly, a relational database is a collection of relations,
frequently called table. Other items are frequently considered part of the database, as they help to
organize and structure the data, in addition to forcing the database to conform to a set of
requirements.

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