Analyst Questions

The famous hill-station Kodaikanal lies in Palani hills.

Candidate Key – A Candidate Key can be any column or a combination of columns that can qualify as unique key in database. There can be multiple Candidate Keys in one table. Each Candidate Key can qualify as Primary Key. 

Primary Key – A Primary Key is a column or a combination of columns that uniquely identify a record. Only one Candidate Key can be Primary Key.

• One needs to be very careful in selecting the Primary Key as an incorrect selection can adversely impact the database architect and future normalization. For a Candidate Key to qualify as a Primary Key, it should be Non-NULL and unique in any domain.

Africa is the second largest continent both by popolation and area wise. Asia being first by both popolation and area wise.

Passive Voice : Has the work been completed by him?

Rules in changing from Active voice to Passive voice :

1. Identify the subject, the verb and the object: S+V+O

2. Change the object into subject

3. Put the suitable helping verb or auxiliary verb

4. Change the verb into past participle of the verb

5. Add the preposition "by"

6. Change the subject into object.

There are 8 different types of Soils present in India. They are primarily differentiated on the basis of composition and structure. They are ::

1.  Alluvial soils, 

2.  Black soils,

3.  Red soils,

4.  Laterite and Lateritic soils,

5.  Forest and Mountain soils,

6.  Arid and Desert soils,

7.  Saline and Alkaline soils and

8.  Peaty and Marshy soils.

Hydroelectricity is electricity produced from hydropower i.e, water.