Insertion of duplicate rows-Teradata
Explain how teradata ensures that there are no duplicate rows being inserted when it’s a SET table?
Expert
Teradata will redirect the new inserted row as per its PI to target AMP (on the basis of its row hash value) and if it find out same row hash value.
AMP (hash synonyms) then it begins comparing the entire row and find out if duplicate.
If it’s a duplicate it silently skips it devoid of throwing any error.
Briefly describe the five elements of an Information Systems Architecture and their relationship to data.
Give definition of data structure?
Write brief note on E.F. Codd, and why is he noteworthy in the development of modern database systems?
Name the main data structures used in these areas: Hierarchical data model, RDBMS and Network data model?
Illustrates the levels of data abstraction?
How simple is NetLib to utilize?
Illustrates the term Merge Sort?
Explain several of the products of Sybase?
Explain the term Enterprise and Workgroup modes?
Explain the term Super servers?
18,76,764
1936638 Asked
3,689
Active Tutors
1440822
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!