The attributes that do not exist in the physical database
Types of Attributes • Simple attribute− Simple attributes are atomic values, which cannot be divided further. For example, a student's phone number is an atomic value of 10 digits. • Composite attribute− Composite attributes are made of more than one simple attribute. For example, a student's complete name may have first_name and last_name. • Derived attribute− Derived attributes are the attributes that do not exist in the physical database, but their values are derived from other attributes present in the database. For example, average_salary in a department should not be saved directly in the database, instead it can be derived. For another example, age can be derived from data_of_birth. • Single-value attribute− Single-value attributes contain single value. For example − Social_Security_Number. • Multi-value attribute− Multi-value attributes may contain more than one values. For example, a person can have more than one phone number, email_address, etc.
__________ is a section of the Microsoft Taskbar that enables a user the ability to instantly take-off their programs.
What do you call the memory that stores recently-used information in a place where it can be accessed extremely fast?
Which among the following is a volatile memory?
Protocol is ....................
Which of the following is not one of the states of the computer?
What is the use of proxy server?
In the context of cybersecurity, what does the term zero-day vulnerability refer to?
What is Solaris?
Which of the following is not an extension for audio files?
Which of the following is not an example of a popular web-based search engine?