Archive for the ‘Mixed’ Category

Data Mining

Data mining requires a class of database applications that look for hidden patterns in a group of data that can be used to predict future behavior. For example, data mining software can help retail companies find customers with common interests.   The phrase data mining is commonly misused to describe software that presents data in new ways. […]

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Advanced Data Modeling

The Extended Entity-Relationship Model is a more complex high-level model that extends an E-R diagram to include more types of abstraction, and more clearly express constraints. All of the concepts contained within an E-R diagram are included in the EE-R model, along with additional concepts that cove more semantic information. These additional concepts include generalization/specialization, […]

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NORMALIZATION OF DATABASE TABLES

Creating a good database requires a good database design plus a good database structure. If the database contains a good table structures then the database will work well. A good database should avoid data redundancy or data anomalies which can be prevented through a well-defined table structures. The process is called normalization. Table is the […]

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Data Models and Database Environment

Databases and database systems are an essential component of everyday life in this modern society. In a daily life of an organization, most encounter several activities that involve some interaction with a database. Databases play a critical role in almost all areas where computers are used, including business, electronic commerce, engineering, medicine, law, education, and […]

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Database Development Process

Good decisions require good information that is derived from raw facts known as data. Data are likely to managed most efficiently when they are stored in a database. Databases evolved from computer file systems. Although file system data management is now largely outmoded, understanding the characteristics of file systems is important because they are the source […]

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TYPES OF SYSTEMS

1. Transaction Processing Systems (TPS) It is a computerized information systems that were developed to process large amounts of data for routine business transactions. TPS eliminates the tedium/tediousness of necessary operational transactions and reduces the time once required to perform them manually. TPS are boundary-spanning systems that permit the organization to interact with external environments. […]

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Why HCI?

HCI considers important issues on the design of effective interactive systems on every day life as in the workplace at home and in schools. The term Human Computer Interaction was adopted in the mid 1980’s as a means of describing this new field of study. There are numbers of reasons why Human-Computer Interaction is a […]

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Entity-Relationship Model

An entity relationship diagram, also called entity relationship model, is a graphical representation of entities and their relationships to each other, typically used in computing in regard to the organization of data within databases or information systems. An entity relationship diagram is a specialized graphic that illustrates the relationships between entities in a database. Also Known […]

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