Glossary for Computer Concepts: data

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attribute: Attribute (Lesson: Big Data)
   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: Big Data (Lesson: 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: Data Center (Lesson: Big Data)
   a climate-controlled room, building, or buildings that houses servers storing and delivering information and services
data dictionary: Data Dictionary (Lesson: Big Data)
   provides a detailed description of each field and table in a database
data hierarchy: Data Hierarchy (Lesson: Big Data)
   refers to the manner in which data in a database is organized into sequential levels of detail
data integrity: Data Integrity (Lesson: Big Data)
   refers to the quality of data: the degree to which it is accurate and up to date
data mining: Data Mining (Lesson: Big Data)
   the process of extracting information from a data warehouse
data questions: Self Study Questions(Lesson: Big Data)
   What have you learned?
data warehouse: Data Warehouse (Lesson: Big Data)
   a very large database that holds information from a variety of sources
database: Database (Lesson: Big Data)
   a collection of organized data, of integrated and related files or tables
database tools: Database Tools (Lesson: Big Data)
   include software and techniques for analyzing, maintaining, and manipulating data in a database
DBMS: DBMS: Database Management System (Lesson: Big Data)
   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: Entity (Lesson: Big Data)
   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: ERD: Entity Relationship Diagram (Lesson: Big Data)
   illustrates relationships between tables in a database
field: Field (Lesson: Big Data)
   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: Key, database (Lesson: Big Data)
   A database key is a field in a table used to identify a record
normalization: Normalization (Lesson: Big Data)
   the process of correcting data problems or anomalies, ensuring that the database contains good data
primary key: Primary Key (Lesson: Big Data)
   A primary key is a field (or combination of fields) within a database table that uniquely identifies each record
record: Record (Lesson: Big Data)
   A collection of related fields that describe some object or activity. A record is an instance of an entity.
relational database: Relational Database (Lesson: Big Data)
   A relational database organizes data into multiple tables that are related by common fields called keys
schema: Schema, Database (Lesson: Big Data)
   A database schema is a graphical representation of the structure of a database
SQL: SQL: Structured Query Language (Lesson: Big Data)
   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: Table (File) (Lesson: Big Data)
   A collection of related records is a table, also called a file in some databases
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