A SURVEY OF DATA BASE MANAGEMENT IN ENHANCING THE WORK PERFORMANCE OF OTM GRADUATES IN SELECTED ORGANISATIONS IN ABUJA
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A SURVEY OF DATA BASE MANAGEMENT IN ENHANCING THE WORK PERFORMANCE OF OTM GRADUATES IN SELECTED ORGANISATIONS IN ABUJA
A SURVEY OF DATA BASE MANAGEMENT IN ENHANCING THE WORK PERFORMANCE OF OTM GRADUATES IN SELECTED ORGANISATIONS IN ABUJAABSTRACT
The research provides a survey of data base management in
enhancing the work performance of OTM graduates in selected organization
in Abuja.it provides a conceptual and theoretical appraisal of data
base management and its significance in enhancing the work performance
of OTM graduates.
BACKGROUND OF THE STUDY
A database is an organized collection of data.[1]
It is the collection of schemes, tables, queries, reports, views and
other objects. The data is typically organized to model aspects of
reality in a way that supports processes
requiring information, such as modelling the availability of rooms in
hotels in a way that supports finding a hotel with vacancies.
A database management system (DBMS) is a computer software
application that interacts with the user, other applications, and the
database itself to capture and analyze data. A general-purpose DBMS is
designed to allow the definition, creation, querying, update, and
administration of databases. Well-known DBMSs include MySQL, PostgreSQL, Microsoft SQL Server, Oracle, Sybase and IBM DB2. A database is not generally portable across different DBMSs, but different DBMS can interoperate by using standards such as SQL and ODBC or JDBC
to allow a single application to work with more than one DBMS.
Database management systems are often classified according to the database model that they support; the most popular database systems since the 1980s have all supported the relational model as represented by the SQL language.
Sometimes a DBMS is loosely referred to as a 'database'Formally, a
"database" refers to a set of related data and the way it is
organized. Access to this data is usually provided by a "database
management system" (DBMS) consisting of an integrated set of computer
software that allows users
to interact with one or more databases and provides access to all of
the data contained in the database (although restrictions may exist
that limit access to particular data). The DBMS provides various
functions that allow entry, storage and retrieval of large quantities
of information as well as provides ways to manage how that information
is organized. Because of the close relationship between them, the term
"database" is often used casually to refer to both a database and the
DBMS used to manipulate it. Outside the world of professional information technology, the term database is often used to refer to any collection of related data (such as a spreadsheet or a card index).
This article is concerned only with databases where the size and
usage requirements necessitate use of a database management system.[2]Existing
DBMSs provide various functions that allow management of a database
and its data which can be classified into four main functional groups:
- Data definition – Creation, modification and removal of definitions that define the organization of the data.
- Update – Insertion, modification, and deletion of the actual data.[3]
- Retrieval – Providing information in a form directly
usable or for further processing by other applications. The
retrieved data may be made available in a form basically the same as it
is stored in the database or in a new form obtained by altering or
combining existing data from the database.[4]
- Administration – Registering and monitoring users,
enforcing data security, monitoring performance, maintaining data
integrity, dealing with concurrency control, and recovering
information that has been corrupted by some event such as an
unexpected system failure.[5]
Both a database and its DBMS conform to the principles of a particular database model.[6] "Database system" refers collectively to the database model, database management system, and database.[7]Physically, database servers
are dedicated computers that hold the actual databases and run only
the DBMS and related software. Database servers are usually multiprocessor computers, with generous memory and RAID
disk arrays used for stable storage. RAID is usedfor recovery of data
if any of the disks fail. Hardware database accelerators, connected to
one or more servers via a high-speed channel, are also used in large
volume transaction processing environments.
DBMSs are found at the heart of most database applications. DBMSs may be built around a custom multitaskingkernel with built-in networking support, but modern DBMSs typically rely on a standard operating system to provide these functions. Since DBMSs comprise a significant economicalmarket,
computer and storage vendors often take into account DBMS requirements
in their own development plans. Databases and DBMSs can be categorized
according to the database model(s) that they support (such as
relational or XML), the type(s) of computer they run on (from a server
cluster to a mobile phone), the query language(s) used to access the database (such as SQL or XQuery), and their internal engineering, which affects performance, scalability, resilience, and security
A SURVEY OF DATA BASE MANAGEMENT IN ENHANCING THE WORK PERFORMANCE OF OTM GRADUATES IN SELECTED ORGANISATIONS IN ABUJA
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The research provides a survey of data base management in enhancing the work performance of OTM graduates in selected organization in Abuja.it provides a conceptual and theoretical appraisal of data base management and its significance in enhancing the work performance of OTM graduates... computer science project topics
A SURVEY OF DATA BASE MANAGEMENT IN ENHANCING THE WORK PERFORMANCE OF OTM GRADUATES IN SELECTED ORGANISATIONS IN ABUJA