- Q What are Catalogs?
- Q When a PC that has been used for the storage of confidential data is sold on the open market the: A. hard disk should be demagnetized. B. hard disk should be mid-level formatted.s C. data on the hard disk should be deleted. D. data on the hard disk should be defragmented.
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- Q Name the Swedish-Eritrean journalist (He is currently in prison in Eritrea) who has been chosen for the UNESCO/Guillermo Cano World Press Freedom Prize 2017?
- Q Westminster Abbey is dedicated to who
- Q Write Notes on Lewis antigen
- Q Describe what is meant by the term "lung compliance."
- Q OUT OF 100 FAMILIES IN NEIGHBOUR HOOD , 55 OWN RADIO, 75 OWN T.V AND 25 OWN VCR. ONLY 10 FAMILIES HAVE ALLOF THESE, AND EACH VCR OWNER HAS TV . IF 25 FAMILIES HAVE THE RADIO ONLY, THE NO. OF FAMILIES HAVE ONLY TV ARE?
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- Q what is 2,4,5-T?
Answers
The Cassandra data model has 4 main concepts which are cluster, key space, column, column family. Clusters contain many nodes (machines) and can contain multiple key spaces. A key space is a namespace to group multiple column families, typically one per application. A column contains a name, value and timestamp. A column family contains multiple columns referenced by a row keys.
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