What are the principles of database?
What good is a database?
- concurrency – Multiple users can safely read and edit database entries simultaneously.
- reliability – Relational databases formalize and can enforce concepts of “tidy” data.
- scalability – Very large tables can be read, searched, and merged quickly.
What are the basic principles of database administrator?
Part 1: Databases and Database Design
- Data Independence.
- Database Modelling.
- Managing Structured, Semi-Structured and Unstructured Data.
- Managing Data Redundancy.
- Specifying Integrity Rules.
- Concurrency Control.
- Backup and Recovery Facilities.
- Data Security.
How is the single responsibility principle used in software development?
Even if you have never heard of Robert C. Martin or his popular books, you have probably heard about and used this principle. It is one of the basic principles most developers apply to build robust and maintainable software. You can not only apply it to classes, but also to software components and microservices.
Where did the single responsibility principle come from?
The term was introduced by Robert C. Martin in an article by the same name as part of his Principles of Object Oriented Design, made popular by his 2003 book Agile Software Development, Principles, Patterns, and Practices.
Which is an example of single responsibility in Java?
Spring Framework in general, is also a great example of Single Responsibility in practice. Spring framework is quite vast, with many modules – each module catering to one specific responsibility/functionality. We only add relevant modules in our dependency pom based on our needs.
What is the responsibility of the EntityManager interface?
The EntityManager interface provides a set of methods to persist, update, remove and read entities from a relational database. Its responsibility is to manage the entities that are associated with the current persistence context. That is the only responsibility of the EntityManager.