Oes Nosql database can be a effective substitution of RDBMS in web-oriented market envrionment?

Use the following format for proposal

1.The problem and its setting
1-a.The statement of the problem and subproblems
1-b.the hypothesis
1-c.The delimitations
1-d.The definitions of the terms
1-e.The assumptions
1-f. The importance of the study

2.Research plan(research methodology and specific plan for the research)