Tell me what is the difference between the observers and callbacks in ruby on rails?

870

In routing activity, define what is the default property used to route the object?

515

Distinguish between @synthesize and @dynamic in objective –c?

1

how many synchronous motor are there in any power plant

2006

What is database optimization?

964

What is f:validatelongrange tag in jsf (javaserver faces)?

75

Which data loaded are in target db?

577

What is the use of the ClientBin folder?

5

What is pitching in the suspension system?

1312

How to estimate testing effort ?

1115

what is site link?

2176

Tell me what is the limitation to the depth of your categories?

245

Write the each half cell reaction and also net cell reaction for a cell

2921

What is equivalence partitioning testing?

1074

How will you define e-commerce?

1067