Explanation:
Both Primary Key and Candidate Key are the attributes that are used to access tuples from a table. These (Primary key and Candidate key) are also can be used to create a relationship between two tables.
- A Candidate Key can be any column or a combination of columns that can qualify as a unique key in the database. Each Candidate Key can qualify as a Primary Key.
- A Primary Key is a column or a combination of columns that uniquely identify a record. The primary key is a minimal super key, so there is one and only one primary key in any relationship.
<em> The main difference between them is that a primary key is unique but there can be many candidate keys. </em>
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Physical Components to a computer are called hardware.
ICANN is the agency which coordinates the internet's IP addressing and DNS systems.
ICANN stands for Internet Corporation for Assigned Names and Numbers. Aside from coordinating the Domain Name System (DNS) and Internet Protocol (IP) addresses, it also coordinates the technical protocol parameters of ARPA top level domain, Internet DNS root zone management (gTLD and ccTLD), allocates Internet number resources, and other services which will fulfill their vision of "one world, one Internet".
The performance of ICAANs services is all under a U.S Government contract.
Answer:
sequential files
Explanation:
Q:
Data files whose records are always retrieved in sequence from the beginning of the file are
A:
sequential files
Answer:
Option E is correct.
Explanation:
While the user's server forms of the specific domain Active Directory. His corporation also partnered with some firms recently. The obtained corporation seems to have a multi-domain Active Directory server for both areas, both domain operators use the following Windows Servers. This was assigned the responsibility of proposing improvements to the Active Directory system.
He needs users of all corporations will gain exposure with each other's services, however, he wants to reduce logistical activity to achieve. Thus, he would build a two-way forest relationship between both the two roots forest domains.
