AWS - DynamoDB
Why does DynamoDB require a primary key for each table?
Why does DynamoDB require a primary key for each table?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the role of primary keys in DynamoDB
Primary keys uniquely identify each item in the table.Step 2: Explain why uniqueness is important
Uniqueness allows DynamoDB to quickly find and access items without scanning the whole table.Final Answer:
To uniquely identify each item and enable fast lookups -> Option DQuick Check:
Primary key = unique ID for fast access [OK]
Quick Trick: Primary key ensures unique and fast item access [OK]
Common Mistakes:
- Thinking primary key stores backups
- Confusing primary key with scripts
- Assuming it limits attributes
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