A brief treatment of databases follows. For full treatment, see computer science: Information systems and databases; information processing. A database is stored as a file or a set of files. The information in these files may be broken down into records, each of which consists of one or more fields. Fields are the basic units of data storage, and each field typically contains information. The relational database management system will enter the new records and update all the required information, thereby allowing brands to track and sell their products in an effective fashion. It helps brand managers to search data in a better manner. A database is an organized collection of data, generally stored and accessed electronically from a computer system.Where databases are more complex they are often developed using formal design and modeling techniques. The database management system (DBMS) is the software that interacts with end users, applications, and the database itself to capture and analyze the data.
Organizations produce and gather data as they operate. Contained in a database, data is typically organized to model relevant aspects of reality in a way that supports processes requiring this information. Knowing how this can be managed effectively is vital to any organization.
What is a Database Management System (or DBMS)?
Organizations employ Database Management Systems (or DBMS) to help them effectively manage their data and derive relevant information out of it. A DBMS is a technology tool that directly supports data management. It is a package designed to define, manipulate, and manage data in a database.
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Some general functions of a DBMS: Drivedx 1 6 0 – advanced drive health diagnostic utility.
Some well-known DBMSs are Microsoft SQL Server, Microsoft Access, Oracle, SAP, and others.
Components of DBMS
DBMS have several components, each performing very significant tasks in the database management system environment. Below is a list of components within the database and its environment.
Software
This is the set of programs used to control and manage the overall database. This includes the DBMS software itself, the Operating System, the network software being used to share the data among users, and the application programs used to access data in the DBMS.
Hardware
Noiseless 1 0 2. Consists of a set of physical electronic devices such as computers, I/O devices, storage devices, etc., this provides the interface between computers and the real world systems.
Data
DBMS exists to collect, store, process and access data, the most important component. The database contains both the actual or operational data and the metadata.
Procedures
These are the instructions and rules that assist on how to use the DBMS, and in designing and running the database, using documented procedures, to guide the users that operate and manage it.
Database Access Language
This is used to access the data to and from the database, to enter new data, update existing data, or retrieve required data from databases. The user writes a set of appropriate commands in a database access language, submits these to the DBMS, which then processes the data and generates and displays a set of results into a user readable form.
Query Processor
This transforms the user queries into a series of low level instructions. This reads the online user’s query and translates it into an efficient series of operations in a form capable of being sent to the run time data manager for execution.
Run Time Database Manager
Sometimes referred to as the database control system, this is the central software component of the DBMS that interfaces with user-submitted application programs and queries, and handles database access at run time. Its function is to convert operations in user’s queries. It provides control to maintain the consistency, integrity and security of the data.
Data Manager
Also called the cache manger, this is responsible for handling of data in the database, providing a recovery to the system that allows it to recover the data after a failure. Records 1 5 10 – Innovative Personal Database System Ppt
Database Engine
The core service for storing, processing, and securing data, this provides controlled access and rapid transaction processing to address the requirements of the most demanding data consuming applications. It is often used to create relational databases for online transaction processing or online analytical processing data.
Data Dictionary
This is a reserved space within a database used to store information about the database itself. A data dictionary is a set of read-only table and views, containing the different information about the data used in the enterprise to ensure that database representation of the data follow one standard as defined in the dictionary.
Report Writer
Also referred to as the report generator, it is a program that extracts information from one or more files and presents the information in a specified format. Most report writers allow the user to select records that meet certain conditions and to display selected fields in rows and columns, or also format the data into different charts. Great Performance through Effective DBMS
A company’s performance is greatly affected by how it manages its data. And one of the most basic tasks of data management is the effective management of its database. Understanding the different components of the DBMS and how it works and relates to each other is the first step to employing an effective DBMS.
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– Data Czar @ DEO
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