Database Programming
Definitions

What is a database?

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2018-01-24 15:03:48

The database is a collection of data on which we can perform

operations such as:

1. Storing data (Save)

2. Manipulating data (Update, Delete, insert, sort)

3. Retrieve data (Whenever necessary, we can see the data in a

particular table form, or use selected data, as in a computer

program)

Typically a database is made up of many linked tables of rows

and columns, each containing specific data (E.g. name, address,

location, size, weight, dates).

Field: each column represents a field.

Record: each row represents one record.

Table: collection records.

Database is the collection of data . Or we should say that

database is the collection of interrelated data.

Database A database is an organized collection of

data, today typically in digital form. The data are typically

organized to model relevant aspects of reality (for example, the

availability of rooms in hotels), in a way that supports processes

requiring this information (for example, finding a hotel with

vacancies). The term database is correctly applied to the

data and their supporting data structures, and not to the database

management system (DBMS). The database data collection with DBMS is

called adatabase system. The term database system implies

that the data is managed to some level of quality (measured in

terms of accuracy, availability, usability, and resilience) and

this in turn often implies the use of a general-purpose database

management system (DBMS).[1] A general-purpose DBMS is typically a

complex software system that meets many usage requirements, and the

databases that it maintains are often large and complex. The

utilization of databases is now spread to such a wide degree that

virtually every technology and product relies on databases and

DBMSs for its development and commercialization, or even may have

such embedded in it. Also, organizations and companies, from small

to large, heavily depend on databases for their operations. Well

known DBMSs include Oracle, IBM DB2, Microsoft SQL Server,

PostgreSQL, MySQL, WebDNA and SQLite. A database is not generally

portable across different DBMS, but different DBMSs

caninter-operate to some degree by using standards like SQL and

ODBC to support together a single application. A DBMS also needs to

provide effective run-time execution to properly support (e.g., in

terms of performance, availability, and security) as many end-users

as needed. A way to classify databases involves the type of their

contents, for example: bibliographic, document-text, statistical,

or multimedia objects. Another way is by their application area,

for example: accounting, music compositions, movies, banking,

manufacturing, or insurance. The term database may be

narrowed to specify particular aspects of organized collection of

data and may refer to the logical database, to physical database as

data content in computer data storageor to many other database

sub-definitions. Graphics Graphics (from Greek

γραφικός graphikos) are visual presentations on some

surface, such as a wall, canvas, screen, paper, or stone to brand,

inform, illustrate, or entertain. Examples arephotographs,

drawings, Line Art, graphs, diagrams, typography, numbers, symbols,

geometric designs, maps, engineering drawings, or other images.

Graphics often combine text, illustration, andcolor. Graphic design

may consist of the deliberate selection, creation, or arrangement

of typography alone, as in a brochure, flier, poster, web site, or

book without any other element. Clarity or effective communication

may be the objective, association with other cultural elements may

be sought, or merely, the creation of a distinctive style. Graphics

can be functional or artistic. The latter can be a recorded

version, such as a photograph, or an interpretation by a scientist

to highlight essential features, or an artist, in which case the

distinction with imaginary graphics may become blurred. Computer

graphics Computer graphics are graphics created using

computers and, more generally, the representation and manipulation

of image data by a computer with help from specialized software and

hardware. The development of computer graphics has made computers

easier to interact with, and better for understanding and

interpreting many types of data. Developments in computer graphics

have had a profound impact on many types of media and have

revolutionized animation, movies and the video gameindustry.]] and

the video game industry.

A database is an electronic way of storing information so that

it is easily accessible by searching more than one field.

User Avatar
Wiki User
2014-12-18 05:24:56

A database is an efficient way of storing data that are related

to each other. A database stores data in the form of tables. Each

record can be uniquely identified by implementation of various

constraints.


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