MySQL and Oracle: Prerequisites and considerations for learning big data technology
With the advent of the big data era, learning big data technology has become important for many people One of the goals. In the process of learning big data technology, becoming familiar with and mastering the relational database management system (RDBMS) is also a very important step. Among RDBMS, MySQL and Oracle are two widely popular database management systems. This article will focus on the prerequisites and considerations for MySQL and Oracle in learning big data technology.
MySQL is a lightweight open source relational database management system that has the characteristics of high performance, high reliability and ease of use. Before learning big data technology, it is very necessary to be familiar with MySQL. Here are some prerequisites and considerations for learning MySQL:
The following is an example that demonstrates how to create a database and a data table, and insert some data:
-- 创建数据库 CREATE DATABASE mydb; -- 使用数据库 USE mydb; -- 创建数据表 CREATE TABLE mytable ( id INT PRIMARY KEY, name VARCHAR(50), age INT ); -- 插入数据 INSERT INTO mytable (id, name, age) VALUES (1, 'John', 25); INSERT INTO mytable (id, name, age) VALUES (2, 'Mary', 30);
Oracle is a powerful commercial relational database management system that is highly flexible and scalable and is often used in large-scale enterprise-level applications. The following are the prerequisites and considerations for learning Oracle:
The following is an example that demonstrates how to create a database and a data table, and insert some data:
-- 创建数据库 CREATE DATABASE mydb; -- 使用数据库 ALTER SESSION SET CURRENT_SCHEMA = mydb; -- 创建数据表 CREATE TABLE mytable ( id NUMBER PRIMARY KEY, name VARCHAR(50), age NUMBER ); -- 插入数据 INSERT INTO mytable (id, name, age) VALUES (1, 'John', 25); INSERT INTO mytable (id, name, age) VALUES (2, 'Mary', 30);
To sum up, one of the prerequisites for learning big data technology is to be familiar with and master RDBMS, and MySQL and Oracle are two commonly used RDBMS. Learning MySQL and Oracle requires familiarity with the SQL language, mastering basic commands and operations, and learning their advanced functions. By understanding and mastering MySQL and Oracle, we can better apply big data technology and improve our data processing and management capabilities.
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