$2$

QUESTION $1$

a$)$ Give a brief definition of the following terms:

i$.$ Data

ii$.$ Field

iii. Record

iv$.$ File

v$.$ Normalization

b$)$ List and describe any four $(4)$ types of Databases.

c$)$ What is a DBMS$?$

d$)$ Explain three $(3)$ functions of a DBMS$.$

$(6)$

e$)$ Explain the differences between data, information, and a database.

$(3)$

OUESTION $2$

a$)$ Discuss the importance of data models.

b$)$ What is a business rule, and what is its purpose in data modeling?

c$)$ Describe with the aid of a diagram the difference between external, internal, and conceptual schemas.

d$)$ Consider the scenario described by the statement, "A customer can make many payments, but each payment is made by only one customer." Use this scenario to make an entity relationship diagram $($ERD$)$ representation. Include an entity, at least one attribute, and a relationship.

e$)$ Big Data is one of the emerging data models. What are the three $(3)$ characteristics of Big Data

$(3)$

f$)$ Name two $(2)$ new technologies of Big Data.

$(2)$