In the database design process the entity relationship model (ERD) is a graphical representation of entities and their relationships to each other in the problem domain. These entities are further converted into tables which help in the practical implementation of the organization’s database. The ERD plays a vital role in understanding the conceptual view of the organization’s database.
Consider a very small organization which has small scale database containing a few tables. One approach for the implementation of this database is to directly create tables in the RDBMS in order to save the time. Another approach is to properly design the database, that is, draw the ERD and then implement in the RDBMS.
Which approach would you recommend for the given scenario, support your answer with reasons.
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any idea ??
hadi yeh gdb ka answer ha
In the given scenario we can use direct approach but we not do it. Because direct approach
became so expensive and less understandable. Due to complexity of direct approach possibilities
of bugs became so high.
may be later on we have to extend our data base OR we have to make another application on that
database. So, it is batter to design this database in more efficient way so we design conceptual
database firstly in E-R data model and then later transform it into the data model of our DBMS.
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