Attributes that do not exist in the physical database, but their values are derived from other attributes present in the 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.
If each number are arranged in decreasing order from left to right, then which of the following yields the second highest number after rearrangement?
Select the incorrect term in the alpha-numeric series:
X, Z, B, D, F, G
What will be the next term in the series?
I, V, X, L, C, D, ?
If we arrange all the letters of the word as per the English alphabetical series within the word then how many words will remain unchanged after the rea...
Which of the following is a non-volatile memory?
How many vowels are between A and @?
In the given arrangement, how many numbers are between the second symbol from the right end and the third symbol from the left end?
What does API stand for?
If in the word ‘ SHORTCUT ’ first three and then next three letters are written in reverse order and the rest of the letters are written as they app...
Arrange the words in the alphabetical order and pick the one that come in the end.