AWS DynamoDB 면접 질문과 답변
Ques 26. Explain the concept of DynamoDB Local.
DynamoDB Local is a downloadable version of DynamoDB that enables local development and testing. It allows developers to test applications without incurring AWS costs.
Ques 27. What is the purpose of the 'DeleteItem' operation in DynamoDB?
The 'DeleteItem' operation removes one or more items from a table based on their primary key. It is used to delete specific items from a table.
Ques 28. Explain the concept of Conditional Writes in DynamoDB.
Conditional Writes allow you to specify conditions that must be satisfied for a write operation to succeed. It helps in avoiding conflicts and ensuring data integrity.
Ques 29. How does DynamoDB handle security and access control?
DynamoDB uses AWS Identity and Access Management (IAM) to control access to tables. You can define fine-grained access policies to control who can perform specific actions.
Ques 30. What is the purpose of the 'BatchWriteItem' operation in DynamoDB?
'BatchWriteItem' writes multiple items to one or more tables using a single request. It is more efficient than making individual 'PutItem' or 'DeleteItem' calls.
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