adplus-dvertising
frame-decoration

Question

Avoiding NULL in columns may make queries simpler.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Posted under MySQL Database

Answer: (a).True

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. Avoiding NULL in columns may make queries simpler.

Similar Questions

Discover Related MCQs

Q. Which of these can be used to generate hash values?

Q. IP numbers can be represented as _________________

Q. Bulk loading is less efficient than single row loading.

Q. Loading is faster when a table has no indexes than when it is indexed.

Q. Which is more efficient?

LOAD DATA, INSERT

Q. Without LOCAL, LOAD DATA is _________________

Q. Which option turns on the –extended-insert?

Q. Which table option for MyISAM tables reduces index flushing?

Q. Which option repairs MyISAM tables automatically after they open?

Q. The option which delays index flushing for slave server is _________________

Q. TO enable the compressed client/server protocol the option is _________________

Q. To reactivate indexes the command used is _________________

Q. Which of these has higher priority?

writes, reads

Q. How many of the following implement the default scheduling property of MySQL?

MyISAM, MERGE, MEMORY

Q. Which statement issues a lock on tables?

Q. Reading from a table does not change it.

Q. To how many of these does the LOW_PRIORITY modifier apply to?

DELETE, INSERT, LOAD DATA, REPLACE

Q. The number of tables among the following for which HIGH_PRIORITY have an effect are _________________

MyISAM, MEMORY, MERGE

Q. The number of tables for which DELAYED works is _________________

MyISAM, MEMORY, ARCHIVE, BLACKHOLE

Q. Find the odd one out in terms of scheduling policies.