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However, that weakness was equally its strength because skilful implementations of IDS-type databases, such as British Telecom's huge CSS project (an IDMS database servicing more than 10 billion transactions per year), show levels of performance on terabyte-sized databases that are unmatchable by all relational database implementations. Charles ...
A database management system (DBMS) is a computer program (or more typically, a suite of them) designed to manage a database, a large set of structured data, and run operations on the data requested by numerous users. Typical examples of DBMS use include accounting, human resources and customer support systems.
A user will typically access other component database systems by using a multidatabase language but this removes any levels of location transparency, forcing the user to have direct knowledge of the federated schema. A user imports the data they require from other component databases and integrates it with their own to form a federated schema.
The term also refers to a general technique influenced by Zloof's work whereby only items with search values are used to "filter" the results. It provides a way for a software user to perform queries without having to know a query language (such as SQL). The software can automatically generate the queries for the user (usually behind the scenes).
Navathe completed his S.S.C. from Modern High School, Pune in 1961 and F.Y.Bsc (Inter Science) in 1963 and at B.Sc. (Physics) in 1965. He obtained his B.E. degree in Electrical Communications Engineering at the Indian Institute of Science, where he was a gold medalist.
have a table inheritance mechanism which, when combined with Database triggers (via the CL language, see below), allows the database designer to program the database in an object-oriented fashion. Table inheritance also avoids or reduces the need for supplementary tables whose primary key is a foreign key to another table, and thus can simplify ...
The Pick Operating System is an integrated computing platform with a database, query and procedural operation languages, peripheral and multi-user management, and BASIC programming capabilities. Its database utilizes a hash-file system, enabling efficient data storage and retrieval by organizing data into dynamic associative arrays managed by ...
Database abstraction layers reduce the amount of work by providing a consistent API to the developer and hide the database specifics behind this interface as much as possible. There exist many abstraction layers with different interfaces in numerous programming languages. If an application has such a layer built in, it is called database ...