Tables and flat files have rows and columns of information., , Scalability means a system can grow when demand does., , Data persistence means data might be stored forever., , A relational database links the information in different tables., , A null value means there is no data., , A logical schema outlines the structure of a database., , Physical schema refers to the actual tables, columns and relationships created in the RDBMS., , A row in a table is called a record., , A column in a table is called a field., , A primary key identifies a record uniquely., , Constraints set limitations to prevent problems with a database., , Queries are questions a database can answer., , Non-structured data like pictures and documents don't fit into a database., , Metadata is an example of semi-structured data., , Two types of databases are document and key/value., , Different types of access are manual, direct, programmatic, user interface and utility., , Global or server permissions are usually only for an administrator account., , Permissions can be granted, denied or revoked., , The drop command deletes database objects., , A database dump is a one-time backup of a database that exports the schema, tables, views with the data., .
0%
Understanding Databases (7.1)
Share
Share
Share
by
Jacaceres
Edit Content
Print
Embed
More
Assignments
Leaderboard
Show more
Show less
This leaderboard is currently private. Click
Share
to make it public.
This leaderboard has been disabled by the resource owner.
This leaderboard is disabled as your options are different to the resource owner.
Revert Options
Unjumble
is an open-ended template. It does not generate scores for a leaderboard.
Log in required
Visual style
Fonts
Subscription required
Options
Switch template
Show all
More formats will appear as you play the activity.
)
Open results
Copy link
QR code
Delete
Continue editing:
?
