A primary index is used for the distribution of data and is defined when a table is created. A secondary index, on the other hand, is created after the table has been populated and can be used to enhance query performance by providing alternative access paths to the data.
Saturday, 27 January 2024
Explain the difference between a primary index and a secondary index in Teradata.
Greetings everyone,
I go by the name Chanchal Wankhade, and I've been actively engaged in various back-end technologies for over 15 years, specializing in SQL, Oracle, Teradata, MySQL, as well as reporting tools such as Business Objects (BO) and the ETL tool BusinessObjects Data Services (BODS).
In my journey, I've authored informative books on SQL, Oracle, and Teradata, including titles like "PL/SQL FOR ALL," "PL/SQL ONE STOP REFERENCE," "TERADATA BASIC UTILITIES," and "START-UP GUIDE FOR ORACLE DAB'S."
Additionally, I've ventured into the realm of Mutual Funds and authored a book titled "Mutual Funds For All."
These books, namely "PL/SQL FOR ALL," "PL/SQL ONE STOP REFERENCE," "TERADATA BASIC UTILITIES," "START-UP GUIDE FOR ORACLE DAB'S," and "Mutual Funds For All," are available for free download on Google Books. What sets these books apart is the incorporation of real-life examples, followed by syntax explanations and actual use cases.
Feel free to explore and benefit from these valuable resources.
Best regards,
Chanchal Wankhade
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