Question
Attributes are made of more than one simple
attribute.Solution
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.
(168 ÷ 12 + 19 × 64)/(22+1) = ?
(√ 1444 ÷ 5) × 3.25 = ?
(13)2 + 6 × (19)2 – 312 × 4 = ?
What will come in the place of question mark (?) in the given expression?
224 ÷ 8 + 480 ÷ 15 = ? ÷ 2 – 270 ÷ 18
? ÷ 8 = 2048 ÷ 64
72 x 60 x 22 x 32 =?
(320 + 342 + 530 + 915) ÷ (20 + 22 – x + 18) = 43, then the value of x is:
(5/8) x 320 + 100 = ?% of 200 + 90
Find the simplified value of the following expression:
62 + 122 × 5 - {272 + 162 - 422}