There are three types of database architectures - centralized, distributed and m

Question

There are three types of database architectures - centralized, distributed and modular

True or False

A centralized database is where the database is completely contained at one central location (server) and all users access that one location

True or False

A distributed database requires multiple instasnces of a database management system running on each site.

True or False

Periodic data are always physically altered to reflect current data

True or False

Status data is a before and after image - before a transaction and after the transaction against the data

True or False

Explanation / Answer

1.FALSE

-the two architectures are centralized,distributed

2.TRUE

-in centralized architecture , all the clients have one server which serves the clients

3.TRUE

-in distributive system, every node acts as both server and client,having instance of database running on every node

4.FALSE

- we don't need to physically alter periodic data

5.TRUE

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