In database technology, domain refers to the description of an attribute's allowed values. The physical description is a set of values the attribute can have, and the semantic, or logical, description is the meaning of the attribute.
In database technology, domain refers to the description of an attribute's allowed values. The physical description is a set of values the attribute can have, and the semantic, or logical, description is the meaning of the attribute.
Domain is the range of values that an attribute can possess.
Define the two principle integrity rules for the relational modelDisscuss why it is desirable to enforce these rules also explain how DBMS enforces these integrity rules?
Traditional FPS and DBMS both are different from each other. In DBMS there is security of data as well as integrated data while this is not in FPS.
if we need a modifying ,sreach,delete a file so we need a DBMS
YES
join by itself
No it isn't Andy
Look up "domain name" at www.wikipedia.com
A domain is your Internet address. co is the latest domain introduction and is a good alternative if your .com domain is not available
DBMS and RDBMS both are used for storing data. DBMS is the database management system that refers to the collection of interrelated data. RDBMS define relation between the tables in the database
Define the two principle integrity rules for the relational modelDisscuss why it is desirable to enforce these rules also explain how DBMS enforces these integrity rules?
collection of interrelated data & set of program & access those programITS GOALprimary goal of dbms is store & retrieve the database information in convenient & efficient way
11
The simplest answer is that the domain is all non-negative real numbers and the range is the same. However, it is possible to define the domain as all real numbers and the range as the complex numbers. Or both of them as the set of complex numbers. Or the domain as perfect squares and the range as non-negative perfect cubes. Or domain = {4, pi} and range = {8, pi3/2} Essentially, you can define the domain as you like and the definition of the range will follow or, conversely, define the range and the domain definition will follow,
Respect is the condition of being honored.
a lock is variable associated with a data item that describes the status of the item with respect to possible operation that can be applied to it.
In order to define a function you need two sets (which need not be different). To each member of the first set (called the domain), associate one and only one element from the second set (called the co-domain, or range). that is a function. The mapping from the domain to the co-domain can be shown as a table or as a rule or in other forms.
Whatever you choose. The function, itself, imposes no restrictions on the domain and therefore it is up to the person using it to define the domain. Having defined the domain, the codomain, or range, is determined for you.