Contents
What is the role of server between client and database?
In client-server DBMSs, the database management functionality is shared between the clients and the server(s) (Fig. 1). The server is responsible for the bulk of the data management tasks as it handles the storage, query optimization, and transaction management (locking and recovery).
What is the need for connecting to database?
A Database connection is a facility in computer science that allows client software to talk to database server software, whether on the same machine or not. A connection is required to send commands and receive answers, usually in the form of a result set. Connections are a key concept in data-centric programming.
How does application interact with database?
The application server can communicate only through the intermediary of a database driver. A database driver is software that acts like an interpreter between the application server and the database. After the driver establishes communication, the query is executed against the database and a recordset is created.
Is it good idea to have direct access to database?
Ideally, you should always have a mediator between the database and the client implementing its own business rules. Providing direct access to database is not a good idea, because when you do so, the one with access has direct access to the tables and can do pretty much anything with the data there is.
How does a customer connect to a web service?
Customers authorize to the web service using some sort of credentials via an encrypted connection, the web service validates data and performs queries against the backend database, then returns the result to the client.
Which is better REST API or directly DB calls?
When it comes to a large applications with huge database containing milions of records, you soon realize, plain selects, updates, inserts and deletes simply are not enough. So you start thinking in a different way. You create procedures and triggers to take care of more complicated stuff directly in the database and this is not very good.
Do you need business logic when calling directly the database?
The Business Logic is also needed when calling directly the database. It won’t take much longer to develop When it comes to a large applications with huge database containing milions of records, you soon realize, plain selects, updates, inserts and deletes simply are not enough.