adplus-dvertising
frame-decoration

Question

What is the main difference between Entity-Relationship Modeling and data modeling techniques before the 1970s?

a.

Entity-Relationship Modeling only deals with logical structure of data

b.

Data modeling techniques before the 1970s only dealt with implementation of data

c.

Entity-Relationship Modeling deals with both logical structure and implementation of data

d.

None of the above

Answer: (a).Entity-Relationship Modeling only deals with logical structure of data Explanation:Entity-Relationship Modeling only deals with logical structure of data, whereas the data modeling techniques before the 1970s mixed up implementation concerns with the logical structure of the Unit of Data.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. What is the main difference between Entity-Relationship Modeling and data modeling techniques before the 1970s?