Techie Talks

1)First of all install java jdk 1.6 In my case ,JAVA_HOME= /usr/java/jdk1.6.0_33 2)Create a dedicated hadoop user group to separate ...

Add the following line to your hbase-env.sh file: export JAVA_HOME=/usr/lib/jvm/java-6-sun In the same file change this line: exp...

What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster? JobTracker is the daemon service for subm...

All-in-One Example Many of you asked for a "complete" example that would run through all of the normal forms from beginning to ...

Boyce-Codd Normal Form (BCNF) A relation is in BCNF if every determinant is a candidate key. Recall that not all ...

A candidate key for a relation is a set of its attributes that satisfy: • Uniqueness. The values of the attributes uniquely identify a tupl...

Prior to Normalization Item Colors Price Tax Pen red, blue 2.0 0.20 Scale ...