Monday, March 7, 2011

Chapter 7: Review Questions

2.) What is the difference between a file manager and a database management system? How are they similar?
- A database "is a program or system of programs that can manipulate data in a large collection of files", while a file manager " is sufficient for mailing lists and other common data management applications." For larger and more comlex jobs, it is more reliable to use a database.
4.) What is a query? Give examples of the kinds of questions that might be answered with a query.
- A query is an information request. Ex: -Are there differenet types of queries?
7.) What does it mean to sort a data file?
- To sort a data files means to organize the database, in order to keep everything running properly.
9.) Describe how record matching is used to obtain information about you. Give an example.
-Record matching is used to find out information about you. For example, if you are located in more than one database then record matching would be able to pull out all your information through the database.

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