Question

1. Which of the following is true?

a. Marketplaces are seldom attractive to citizen-suppliers who want to make use of expensive items they have purchased, that are not regularly used.

b. Capital investment, utilities, and maintenance are some of the costs that sharing economy upstarts save over their competitors.

c. Highly fragmented markets are seldom ripe for rollup in electronic marketplaces.

d. In highly fragmented markets, marketplaces seldom extend their value chain by getting between supplier and customers that would otherwise connect well.

2. Which of the following statements is not true?

	All Structured Query Language (SQL) databases are relational databases.
	Relational database technology lends itself quite well to "NoSQL" technologies by virtue of the extreme flexibility of the relational database model.
	Relational databases use different database formats than hierarchical or object-oriented databases.
	A relational database is the most common standard for expressing databases, whereby tables (files) are related based on common keys.

Answer 1

1.

Correct answer is "b. Capital investment, utilities, and maintenance are some of the costs that sharing economy upstarts save over their competitors."

Rationale:

Corrected statement for a, c, d are below

a. Marketplaces are usually attractive to citizen-suppliers who want to make use of expensive items they have purchased, that are not regularly used.

c. Highly fragmented markets are seldom ripe for rollup in electronic marketplaces.

d. In highly fragmented markets, marketplaces oftentimes extend the value chain by getting between suppliers and customers that would otherwise connect directly

2.

Correct answer which is not a TRUE statement is "Relational database technology lends itself quite well to "NoSQL" technologies by virtue of the extreme flexibility of the relational database model."

Rationale: NoSQL databases don't require any predefined schema, allowing to work more freely with “unstructured data". On the other hand, relational databases are vertically scalable, but usually more expensive.

Please give thumbs up/ likes if you find this answer helpful. Thank you!