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Oct. 4 - known as NORMALIZATION REDUCE REDUNDANT DATA...

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10-4 Database Management Package Data Manipulation Language (DML) Used to query the database 5-47; Structured Query Language (SQL) International standard DDL and DML for relational DBMS 5-49; 5-51; 5-52; Database Structures Hierarchical L k 2 Network Relational
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Hierarchical Model Records are related hierarchically. Each category is subcategory of the next level up. ONE-To-MANY, parent-child relationship Network Model Allows a record to be linked to more than one parent. Supports MANY-TO-MANY relationships. 5-13 RELATIONAL DATA BASE A RELATIONAL DBMS CAN CROSS-REFERENCE DATA AND RETRIEVE DATA AUTOMATICALLY. 5-14 Database Primary Key A primary key is a field or set of fields that uniquely identifies a record.
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5-18;5-15;5-16;5-17; Normalization 0 Eliminate 0 unnecessary redundancy 0 Normalization The method for analyzing and reducing a relational database to its most streamlined form is
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Unformatted text preview: known as NORMALIZATION REDUCE REDUNDANT DATA ELEMENTS 0 Data Warehousing Data warehouse: a collection of data that supports management decision making Data Mart: smaller collection of data focusing on a particular subject or department 5-36; 5-35 Data Mining __ Selecting, exploring, and modeling data to discover unknown relationships Data Mining With data mining the computer answers questions that we do not know to ask Data-Mining Historically, banks were among the first to use Data-Mining techniques. Data Warehouse It is common for a data warehouse to contain 3-10 years worth of current and historical data A data model is a diagram of entities and their relationships IBM has the largest share of database software market...
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