Amazon DynamoDB Local Secondary Index (LSI)

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A secondary index is a data structure that contains a subset of attributes from a table, along with an alternate key to support Query operations. You can retrieve data from the index using a Query, in much the same way as you use Query with a table. A table can have multiple secondary indexes, which give your applications access to many different query patterns.

Every secondary index is associated with exactly one table, from which it obtains its data. This is called the base table for the index. When you create an index, you define an alternate key for the index (partition key and sort key). You also define the attributes that you want to be projected or copied, from the base table into the index. DynamoDB copies these attributes into the index, along with the primary key attributes from the base table. You can then query or scan the index just as you would query or scan a table.


📌 Timestamps
0:00 - Introduction
0:43 - LSI vs. Base Table Structure
1:41 - Attribute Projection
2:49 - Hands-On: Creating a Table with LSI
3:49 - Repopulating Data
4:32 - Querying with LSI

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[arpitajaiswal]

Thanks for this explanation...can you explain on GSI as well please