掌握正则表达式的写法和使用 Chapter 1. Introduction to Regular Expressions Section 1.1. Solving Real Problems Section 1.2. Regular Expressions as a Language Section 1.3. The Regular-Expression Frame of Mind Section 1.4. Egrep Metacharacters Section 1.5. Expanding
SSD7: Database Systems Introduction This course introduces students to database systems. The course explains what a database system is, and then proceeds for the greater part of the learning material to explore relational database systems—databases
