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Data Base Management
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1. Maintaining Data
1.1. File maintenance refers to the procedures that keep data current
1.2. Users add new records to a file when they obtain new data
1.3. Users modify a record to correct inaccurate data or update old data
2. File Processing Versus Databases
2.1. Each department has its own set of files
2.2. Used for many years
2.3. Programs and users share data
3. Relational, Object‐Oriented, and Multidimensional Databases
3.1. A data model consists of rules and standards that define how the database organizes data
3.2. A relational database stores data in tables that consist of rows and columns
4. Databases, Data, and Information
4.1. Collection of data organized in a manner that allows access, retrieval, and use of that data
4.2. Collection of unprocessed items Text Numbers Images Audio Video
5. The Hierarchy of Data
5.1. Data is organized in layers
5.2. Common data types include
6. Database Management Systems
6.1. A data dictionary contains data about each file in the database and each field in those files
6.2. A DBMS provides several tools that allow users and programs to retrieve and maintain data in the database
7. Web Databases
7.1. Databases on the Web allow you
8. Database Administration
8.1. It is important to have a carefully designed database
8.2. Employees should learn how to use the data in the database effectively
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