Please explain me all types of Data models. Also give me the details if each model can have other name.for example:schematic data model is also known as conceptual data model and entity relation data model.

2357

Where is zoom button?

575

Can you explain insert, update and delete query?

1092

A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.

2214

Can group functions be used in the order by clause in oracle?

1040

List the key features of blockchain?

1

What is the significance of the hold and hlda pins?

1175

what is Modal plugin used for in Bootstrap?

5

What is Component in Angular Terminology?

1016

What is unix for?

955

Can an integer be null java?

1050

What is the use of arraylist class in java?

1124

Why should you use azure cdn?

634

How to Map an Ordinary File?

1624

Explain backward and forward consumption.

900