CNIT 18000 Chapter 9: Data Design
14 Nov 2016
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Document Summary
A data structure is a framework for organizing, storing, and managing data. Consists of files or tables that interact in various ways. File-oriented systems, sometimes-called file processing systems, store data in separate files that are not connected or linked. The dbms design, also called a relational database or relational model, was introduced in the 1970s and continues to be dominant approach. A database management system (dbms) is a collection of tools, features, and interfaces that enable users to add, update, manage, access, and analyze data. Specific advantages include: scalability, economy of scale. The inherent efficiency of high-volume processing on larger computers is called economy of scale: enterprise-wide application. A dbms is typically managed by a database administrator (dba): stronger standards, better security, data independence. Interfaces for users, database administrators, and related systems. A query language allows a user to specify a task without specifying how the task will be accomplished.
