Database MCQ - English
- Introduction to Database
- The Relational Model and Normalization
- Data Modeling with ER Model
- SQL for Database Construction
- Managing Multiuser Databases
- SQL Server 2000
- XML and ADO.NET
- Database Processing for BIS
- The Database Development Process
- ER Model and Business Rules
- Physical Database Design
- The Client Server Database
- Data Warehousing
- Distributed Databases
- Object Oriented Database
- Introduction to SQL
- Database Design Using Normalization
- Data Models into Database Designs
- Database Redesign
- Managing Databases with Oracle
- ODBC, OLE DB, ADO, and ASP
- JDBC, Java Server Pages, and MySQL
- The Database Environment
- Modeling Data in the Organization
- Logical Database Design
- Advanced SQL
- The Internet Database Environment
- Data and Database Administration
- Object Oriented Data Modeling
Database Redesign MCQ Questions and Answers
Home | Database | Database RedesignIn this section we provide lots of objective question of Database Redesign in Database Management System.
1) Which of the following SQL statements are helpful in database redesign?
Correlated subqueries only![]()
EXISTS/NOT EXISTS expressions only![]()
Both of the above are helpful![]()
None of the above are helpful.![]()
Answer : C Discuss
2) Database redesign is not terribly difficult if the:
database is structured.![]()
database is well-designed.![]()
database has no data.![]()
database is relatively small.![]()
Answer : C Discuss
3) Which SQL-92 standard SQL command can be used to change a table name?
4) The process of reading a database schema and producing a data model from that schema is known as:
data modeling.![]()
database design.![]()
reverse engineering.![]()
None of the above is correct.![]()
Answer : C Discuss
5) Before any changes to database structure are attempted one should first:
clearly understand the current structure and contents of the database only.![]()
test any changes on a test database only.![]()
create a complete backup of the operational database only.![]()
All of the above should be done.![]()
Answer : D Discuss
6) Which of the following modifications may not succeed?
Changing a column data type from char to date![]()
Changing a column data type from numeric to char![]()
Both of the above actions should succeed.![]()
Neither of the above actions will succeed.![]()
Answer : A Discuss
7) How can you find rows that do not match some specified condition?
8) A regular subquery can be processed:
9) The EXISTS keyword will be true if:
any row in the subquery meets the condition only.![]()
all rows in the subquery fail the condition only.![]()
both of these two conditions are met.![]()
neither of these two conditions is met.![]()
Answer : A Discuss
10) Changing cardinalities in a database is:
a common database design task.![]()
a rare database design task, but does occur.![]()
a database design task that never occurs.![]()
is impossible to do, so a new database must be constructed and the data moved into it.![]()
Answer : A Discuss