VT Chapter 11 Flashcards
(45 cards)
database
collection of information that is organized in a useful way
table
database object in which data is stored, arranged in rows and columns
field
single piece of information in a record within a database (column)
record
information for a single entity in the database (row)
primary key
special field in a record that uniquely identifies the record in the table
Forms
a database object that makes it easier to enter data into a database table and displays the information in an easy to read layout
Report
displays data from a table or a query in a format that is easy to read and print
query
retrieves specific data from one or more tables
A _______ is a collection of related information
database
A table is a database object in which data is stored. It is arranged in rows called _____ and columns called ______.
records, fields
The _____ uniquely identifies a record in a table.
primary key
flat databse
consists of a single list of items
relational database
consists of multiple tables that are related by common information
one to many relationship
when a single record in a table links to multiple records in another table
one to one relationship
a record in one table is linked to a single record in another table.
object oriented database (OODB)
data is stored as objects
multidimensional database (MDB)
structures the information into multidimensional data cubes.
data warehouse
central repository for all the data that an enterprise uses
Database management system (DBMS)
software used to create and manage data in a database
data dictionary
defines all the fields and the type of data each field will contain
data type
defines the kind of data that you can enter in a field, including text, numbers, dates, images, and hyperlinks
data normalization
reduces the size of a database making it easier to keep records up to date and increases query speed
data validation
reduces data entry errors by using validation rules such as data type, data length, acceptable values, and required fields.
database administrator (DBA)
person who manages database systems