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AWS Certified Big Data Specialty (Expired on July 1, 2020) Exam Questions

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AWS Certified Big Data Specialty (Expired on July 1, 2020)

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Question 192:

QuickDialog is a multimedia company running a messaging app. One of the principal features of QuickDialog is that pictures and messages are usually only available for a short time before they become inaccessible to users. The app has evolved from originally centering on person-to-person photo sharing to present users` "Stories" of 24 hours of sequential content, along with "Discover", allowing brands show ad-supported short-form media.
They use DynamoDB to support the mobile application and S3 to host the images and other documents shared between users.
There are around more than 85 core components of DynamoDB are created. Identify the DynamoDB components. select 4 options.

Answer options:

A.Table is similar to a collection in other databases (notation) and it stores data
B.Collection is similar to a Table in other databases (notation) and it stores data
C. Items are similar to Rows and Attributes are similar to columns (notation) in other databases
D.Rows are similar to Items and Columns are similar to Attributes (notation) in other databases
E.Indexes are made up of partition keys and sort keys
F.Indexes are made up of primary keys and sort keys
G. Streams captures data modification events in DynamoDB tables
H.
Streams uniquely identifies each item in the table that can be replicated only as a data stream to other table