What is a database?
Database is a warehouse that organizes, stores and manages data according to data structure.
Each database has one or more different APIs for creating, accessing, managing, searching and copying saved data.
We can also store data in files, but the speed of reading and writing data in files is relatively slow.
Therefore, now we use relational database management system (RDBMS) to store and manage the large amount of data. The so-called relational database is a database based on relational model, which processes the data in the database with the help of mathematical concepts and methods such as set algebra.
ORDBMS (object relational database system) is the product of the combination of object-oriented technology and traditional relational database. Query processing is an important part of ORDBMS. Its performance will directly affect the performance of DBMS.
ORDBMS adds some new features to the original relational database.
RDBMS is a relational database management system, which establishes the relationship between entities, and finally obtains the relational table.
OODBMS object-oriented database management system looks at all entities as objects and encapsulates these object classes. The communication between objects is through messages. OODBMS object relational database is still relational database in essence.
Let’s learn how to simply and quickly install and deploy PostgreSQL services
1. Find the installation service of PostgreSQL and click try.
2. Installation and deployment
Add node – select version – fill in parameters – deployment succeeded
The installation and deployment process is simple and fast. The detailed installation tutorials are as follows:
How to add nodes?
How to install and deploy PostgreSQL