Describe the types of attributes?

Types of attributes: An attribute's category determines the type of values that are permitted in the attribute. For instance, the value version 1 is not valid for an attribute described as an integer, but the value 1 is valid. Numeric types (such as integer or real) can also be limited to a predefined range through their attribute definition.

Choice : An attribute along with a list of predefined values.

ID Reference: An attribute along with a value which is a Unique ID value from another element. It is typically used for element-based cross-references.

ID References: An attribute along with a value of one or more Unique ID values from another part.

Integer: An attribute along with a whole number value (no decimal parts). Examples of valid integers are 22, -22, and +322. An integer could be described to fall within a range.

Integers: An attribute along with a value of one or more integers. Enter each number on a separate line within the Attribute Value text box.
Real An attribute along with a real number value, with or without a decimal part (the value could also be expressed within scientific notation). Examples of valid real numbers are 2, 22.4, -1 0.22, and 2.3e. A real number could be described to fall inside a range.

Posted Date: 5/10/2013 2:05:10 AM | Location : United States

Ask an Expert

Related Discussions:- Describe the types of attributes, Assignment Help, Ask Question on Describe the types of attributes, Get Answer, Expert's Help, Describe the types of attributes Discussions

Write discussion on Describe the types of attributes
Your posts are moderated

Write your message here..

Related Questions

Define query by example, Define Query by Example QBE is a query languag... Define Query by Example QBE is a query language relies upon domain calculus and has two dimensional syntax. The queries are written in the horizontal and vertical dimensions of

Join relation of two tuples, Consider the join of a relation R with relatio... Consider the join of a relation R with relation S. If R has m tuples and S has n tuples, then the maximum size of join is: If R has m tuples and S has n tuples then maximum siz

Explain the query processing, Explain the Query Processing  Data Query ... Explain the Query Processing  Data Query Processing permits a user to report or analyze structured and unstructured data pulled from multiple data sources.

What is identity, What is Identity? Identity (or AutoNumber) is a colum... What is Identity? Identity (or AutoNumber) is a column that automatically produces numeric values. A start and increment value can be set, but most DBA leave these at 1. A GUID

Determine the advantage of object-orientation, Determine the advantage of o... Determine the advantage of object-orientation Finally, object-orientation has advantage of continuity throughout analysis, persistent representation and design implementation.

Central database schema, Show a centralised schema to support the operation... Show a centralised schema to support the operation of the system you have chosen, including in particular: the product catalogue; the outlets and respective stocks; customer record

What is bcnf boyce-codd normal form, BCNF Boyce-Codd Normal Form A rel... BCNF Boyce-Codd Normal Form A relation schema R is in BCNF if it is in 3NF and accepts an additional constraint that for every FD X A, X has to be a candidate key. If a relati

Entities, Entities Let us first be aware of the question: What are e... Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo

Describe disk manager and their work, Describe disk manager and their work?... Describe disk manager and their work? Disk Manager: Responsible for fetching data regulated through file Manager from disk storage within Main memory and deciding what data to

The first normal form (1nf), The First Normal Form (1NF) Let us first d... The First Normal Form (1NF) Let us first describe 1NF: Definition: A relation (table) is in 1NF if 1.      There are no duplicate tuples or rows in the relation. 2.