AWS - DynamoDB
Which of the following is the correct way to define a primary key in DynamoDB?
Which of the following is the correct way to define a primary key in DynamoDB?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall DynamoDB primary key structure
DynamoDB requires a primary key that is either a partition key alone or a composite key with partition and sort keys.Step 2: Check other options for correctness
Primary key must be a combination of three attributes is incorrect because DynamoDB does not use three attributes for primary keys. Primary key is optional in DynamoDB tables is false; primary key is mandatory. Primary key is always an auto-incrementing integer is wrong; DynamoDB keys are not auto-incremented.Final Answer:
Primary key consists of a partition key only or a partition key and sort key -> Option BQuick Check:
Primary key definition = B [OK]
Quick Trick: DynamoDB primary key = partition key [+ optional sort key] [OK]
Common Mistakes:
- Thinking primary key can be optional
- Assuming auto-increment keys like SQL
- Believing primary key needs three attributes
Master "DynamoDB" in AWS
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore AWS Quizzes