By S. Sumathi
This booklet explores the strategies of information mining and information warehousing, a promising and flourishing frontier in database platforms, and provides a wide, but in-depth evaluation of the sphere of knowledge mining. info mining is a multidisciplinary box, drawing paintings from components together with database know-how, man made intelligence, laptop studying, neural networks, data, development popularity, wisdom dependent platforms, wisdom acquisition, info retrieval, excessive functionality computing and information visualization.
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Backup and recovery. DBA has to ensure regular backup of database, incase of damage, suitable recovery procedure are used to bring the database up with little downtime as possible. Database Designer Database designer can be either logical database designer or physical database designer. Logical database designer is concerned with identifying the data, the relationships between the data, and the constraints on the data that is to be stored in the database. The logical database designer must have thorough understanding of the organizations data and its business rule.
The attempts to provide a data model 6 1 Overview of Database Management System that represents the “real world” more closely have been loosely classiﬁed as Semantic Data Modeling. In recent years, two approaches to DBMS are more popular, which are Object-Oriented DBMS (OODBMS) and Object Relational DBMS (ORDBMS). The chronological order of the development of DBMS is as follows: – – – – – – – – Flat ﬁles – 1960s–1980s Hierarchical – 1970s–1990s Network – 1970s–1990s Relational – 1980s–present Object-oriented – 1990s–present Object-relational – 1990s–present Data warehousing – 1980s–present Web-enabled – 1990s–present Early 1960s.
Multiple-tier architecture implementation of multiple-tier architecture can provide the most beneﬁts in terms of scalability, interoperability, and ﬂexibility. For example, in the diagram shown in Fig. 11, the client application looks to Application Server #1 to supply data from a mainframe-based application. Application Server #1 has no direct access to the mainframe application, but it does know, through the development of application services, that 26 1 Overview of Database Management System Application Server #2 provides a service to access the data from the mainframe application which satisﬁes the client request.