Database
is a collection of data organized in a manner that allows access, retrieval and use of data.
Data
is a collection of unprocessed items, which can include text, numbers, images, audio a and video.
Database software
it is a computerized database that can add, modify and delete data in the database, sort and retrieve data, create forms and reports from the data in the database.
Garbage In Garbage Out(GIGO)
is a computing phrase that points out the accuracy of a computer's output depends on the accuracy of the input.
Character-Fields-Records-File
Hierarchy of Data
Character
it represent a single character which can be a number, letter, space, punctuation mark or other symbol.
Fields
is a combination of one or more related characters or bytes and is the smallest unit of data.
Records
is a group of related fields.
File
is a collection of related records stored on a stored on a storage medium.
File maintenance
refers to the procedures that keep data current.
Validation
is the process of comparing data with set of rules or values to find out if the data is correct.
Form (data entry form)
is a window on the screen that provides areas for entering or modifying data in a database.
Report generator(report writer)
allows users to design a report on the screen, retrieve data into the report design and then display or print the report.
Relational database
is a database that stores data in tables that consist of rows and columns.
relationship
is a link within the data.
Object Oriented database(OODB)
stores data in object.
object
is an item that contains data as well as the actions that read or process the data.
Multidimensional databases
stores data in dimensions. It can store more than two dimensions of data