* database Management Systems? (Select all that apply)

a. .are used by organizations of varying sizes and levels of operational complexity.

b. .Require expensive software.

c. .All use the Entity-Relationship model.

*Column-stores and other NoSQL databases started to be grow in which decade? (single choice)

a. 1970s

b. 1990s

c. 2000

d. 1980s

d. Offer advantages over a file-processing system among others by offering easier setup of atomic transactions, data-consistency and security.

* There is no difference between a relational database system and a set of related spreadsheets.

a. True

b. False

*The new specialized databases that were developed for data analysis: (single choice)

a. Are usually small and optimized for use by mobile devices

b. Often use novel distributed-data storage

c. Require high end specialized hardware

d. Have been championed by mostly tech giants of the 1980s and 1990s such as Microsoft, Oracle an Apple

*Normalization is a process of normalizing the data, in which the data in tables becomes easier for a human to interpret and understand at a glance (hence it becomes normalized).

a. True

b. False