PLS 21 Lecture 13: PLS Lect 13
8
PLS 21 Full Course Notes
Verified Note
8 documents
Document Summary
Solve many of the problems encountered in data management: used in almost all modern settings involving data management, business, research, administration. Important to understand how databases work and interact with other applications. Info is the result of processing raw data to reveal meaning. Roles and advantages of the dbms: the intermediary between the user and the database, database structure stored as file collection, can only access files through the dbms, dbms enables data to be shares. Improved data security: better data integration, minimized data inconsistency. Types of databases: classified according to, number of users, database locations, expected type and extent of use. Structured data result from formatting: structure applied based on type of processing to be performed. Semistructured data have been processed to some extent: extensible markup language (xml) represents data elements in textual format, xml database supports semistructured xml data.
