AWS DynamoDB Interviewfragen und Antworten
Frage 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.
Frage 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.
Frage 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.
Frage 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.
Frage 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.
Am hilfreichsten laut Nutzern:
- What is DynamoDB?
- Explain the concept of the 'GetItem' operation in DynamoDB.
- How does DynamoDB handle transactions?