Glossary for Computer Concepts: data

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attribute: a characteristic of an entity, such as ID number. The specific value of an attribute, called a data item – such as R2D2, can be found in the fields of the record describing an entity.
Big Data: refers to the huge amount of data being collected and stored and to the process of drawing useful information from that data
   Big Data
big data: refers to the huge amount of data being collected and stored and to the process of drawing useful information from that data
data center: a climate-controlled room, building, or buildings that houses servers storing and delivering information and services
data dictionary: provides a detailed description of each field and table in a database
data hierarchy: refers to the manner in which data in a database is organized into sequential levels of detail
data integrity: refers to the quality of data: the degree to which it is accurate and up to date
data mining: the process of extracting information from a data warehouse
data warehouse: a very large database that holds information from a variety of sources
database tools: include software and techniques for analyzing, maintaining, and manipulating data in a database
database: a collection of organized data, of integrated and related files or tables
DBMS: consists of a group of programs that manipulate the data within a database, providing an interface between the database and the user or between the database and application programs
   DBMS: Database Management System
dbms: consists of a group of programs that manipulate the data within a database, providing an interface between the database and the user or between the database and application programs
entity: a generalized class of people, places, or things (objects) for which data is collected, stored, and maintained. Entities are represented as tables in a database.
ERD: illustrates relationships between tables in a database
   ERD: Entity Relationship Diagram
erd: illustrates relationships between tables in a database
field: the smallest practical unit in most databases: typically a name, number, or combination of characters that in some way describes an aspect of an object
Key, database: A database key is a field in a table used to identify a record
   Key, database
key: A database key is a field in a table used to identify a record
normalization, data: the process of correcting data problems or anomalies, ensuring that the database contains good data
   Normalization
normalization: the process of correcting data problems or anomalies, ensuring that the database contains good data
primary key: A primary key is a field (or combination of fields) within a database table that uniquely identifies each record
record: A collection of related fields that describe some object or activity. A record is an instance of an entity.
relational database: A relational database organizes data into multiple tables that are related by common fields called keys
schema, database: A database schema is a graphical representation of the structure of a database
   Schema, Database
schema: A database schema is a graphical representation of the structure of a database
SQL: a popular data manipulation language used by the vast majority of database programmers and administrators for manipulating data to meet the needs of the users
   SQL: Structured Query Language
sql: a popular data manipulation language used by the vast majority of database programmers and administrators for manipulating data to meet the needs of the users
table (file): A collection of related records is a table, also called a file in some databases
   Table (File)
table: A collection of related records is a table, also called a file in some databases
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