1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Svetllana [295]
3 years ago
15

Describe the differences in meaning between the terms relation and relation schema.

Computers and Technology
1 answer:
Talja [164]3 years ago
5 0

Answer:

Relational Schema refers to meta-data elements which are used to describe structures and constraints of data representing a particular domain. A relation abide of a heading and a body. A heading is a set of attributes. A body is a set of n-tuples. The heading of the relation is also the heading of each of its tuples.

Explanation:

Defination of relation:

A relation is a property or predicate that ranges over more than one argument

A relation is defined as a set of n-tuples. In both mathematics and the relational database model, a set is an unordered collection of items. In mathematics, a tuple has an order, and allows for duplication.

Relation schema

A relation schema is a collection of meta-data that describes the relations in a database. Which is also called data base schema. This schema can be described as the “layout” of a database or the blueprint that outlines the way data is organized into table.

You might be interested in
​________ is the scientific​ collection, examination,​ authentication, preservation, and analysis of data held on or retrieved f
ikadub [295]

Answer:

Computer forensics

Explanation:

Computer forensics

8 0
3 years ago
After an object has been instantiated, its methods can be accessed using the object's _____, a dot, and a method call
BigorU [14]
<span>After an object has been instantiated, its methods can be accessed using the object's identifier, a dot, and a method call.
</span>DOI stands for D<span>igital Object Identifier, to permanently identifies an article or document and link to it on the web and can be  </span><span>a string of numbers, letters and symbols.</span>
5 0
3 years ago
How to write greater than or equal to in excel if function
natali 33 [55]

Answer:>=

Explanation:3>=4

I

5 0
3 years ago
What is a half note + a 8th note in band? plz helppp
skad [1K]
One quarter note plus one eighth note equals one and a half beats. So a dotted quarter note lasts for one and a half beats.
3 0
4 years ago
Read 2 more answers
How do you keep word from trying to capitalize every isolated letter "i"
Firdavs [7]
Write "i" the write random words then delete it and add the lowercase i
8 0
3 years ago
Read 2 more answers
Other questions:
  • Simon wants to use an invoice template created by Office.com. The first step after selecting the File tab is to select
    14·1 answer
  • Bit rate is a measure of how many bits of data are transmitted per second. Compared to videos with a higher bit rate, the same v
    13·1 answer
  • Can any existing directory beneath the system root directory be used as a mount point?
    9·1 answer
  • Enables you to navigate through pieces of information by using links which connect them.
    10·1 answer
  • Text that does not fit in a cell
    7·1 answer
  • One guideline for writing content for the web is to use ____ space to visually separate sections of content.
    15·1 answer
  • Digital art is created by using __?
    5·1 answer
  • Match the order in which you should develop a plan:
    7·1 answer
  • Once you select a theme, you__________ change the theme’s individual elements independently of each other.
    12·1 answer
  • What is the best method for modern businesses to authorize the use of workplace resources to its employees? a. assign them a use
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!