Multiple choice related to AWS:    Question1:  Which AWS service is an option that can be used to store and retrieve secrets within an AWS Lambda function? a. AWS Config b. AWS Step Functions c. AWS Systems Manager d. AWS Key Management Service (AWS KMS)

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Concurrency Control

The simultaneous occurrence of two or more operations is called concurrence and the situation is called concurrency. In concurrency, the function of one operation can affect the function of the other and put data integrity at risk. Hence, management for the control of concurrency is required. The management or controlling system in the Database Management System (DBMS) that coordinates concurrent access is called the concurrency control system.