1. The purpose of the primary key in a database is to (d)
a. Unlock the database
b. Provide a map of the data
c. Establish constraints on database operations
d. Uniquely identify a record
2. A goal of normalization is to (d)
a. Minimise the number of relationships
b. Minimise the number of entities
c. Minimise the number of tables
d. Minimise data redundancy
Direction (Q. 3-5): In a certain code language, he likes vanilla flavour is written as kit Dale era nobody likes too sweet flavour is written as Rafi-Leep zo vanilla is my favourite is written as chi day Evo sweet is best is written as chibi Koo and likes favourite is written as Raye.
3. What is code for too? (d)
a. ra
b. fi
c. zo
d. zo or fi
4. What is the code for he? (a)
a. kit
b. da
c. lee
d. pi
5. Which of the following is the code for nobody likes vanilla? (d)
a. zo ra da
b. da fi ra
c. pi ra da
d. zo or fi, ra da
