the code is written once by a super programmer in XP without any further modification. 

the sprints are longer in XP than in Scrum

the customer is a member of the XP team but not in the Scrum team

Code versioning using tools like Git

Centralizing all code into a microservice architecture

Automated build and test processes

Manual approval for code merges

Deployment automation to staging and production environments

In both, parts can exist independently of the whole.

Composition implies dependency for existence. Parts depend on the whole for their existence.

Both represent the same relationship.

Aggregation implies dependency for existence. Parts depend on the whole for their existence.

Accepting operators like $ne from the client

Using Mongoose validation

Directly using user input in queries

Sanitizing input

Both managment aspects and Software development practices,

Only software development practices,

Only project management aspects,