Question
What is the primary advantage of using Normalization in
a database design?Solution
Normalization is the process of organizing a relational database in such a way that it reduces redundancy and eliminates undesirable characteristics like insertion, update, and deletion anomalies. The goal of normalization is to ensure that:
- Data redundancy is minimized, which reduces storage costs and prevents inconsistent data.
- Data dependency is minimized by breaking down large tables into smaller, manageable ones and linking them via foreign keys.
- A is incorrect because normalization does not necessarily reduce the number of tables but instead organizes data across multiple tables more effectively.
- B is incorrect because normalization is aimed at reducing redundancy and improving data integrity, not increasing redundancy. It might slightly decrease query performance due to the increase in joins between tables.
- D is incorrect because normalization might not directly improve query performance; it can actually slow it down due to the increased number of joins.
- E is incorrect because, while normalization introduces some complexity in the schema (due to the use of foreign keys), its primary goal is not to increase complexity but to organize data in a way that reduces redundancy and dependency.
Anil and Ashish receive Rs.2100 for work of 7 days. If Anil is 4 times efficient than Ashish, then find the daily wage received by Ashish.
Which one of the following statements regarding force is correct?
Match the following Employer Organisations with their year of formation:
The average wage of a group of 30 labourers is Rs. 400. If 4 persons receiving average wage of Rs. 320 leave the group and 2 persons receiving average w...
The abnormal loss is debited to following accounts:Â
With reference to the Eklavya Model Residential Schools (EMRS), consider the following statements:Â
1. It is a Central Sector Scheme implemented...
Bilateral netting sometimes seen in news, it refers to
Which of the following is true about Recession?
Consider the following statements about Speaker:
1. Speaker steps out of his office immediately after house is dissolved
2. Speaker o...
Which of the statements are true in regards to Styasodhak Samaj?
1.   Spread of education among women and lower caste
2.   Complet...