Introduction - If you have any usage issues, please Google them yourself
Database emulator
Implement console command lexical analysis, grammar analysis, semantic response.
Implement the file batch command. Improved input efficiency.
Implement a data dictionary for tables.
To improve the reading speed of the data dictionary, use the index file for the data dictionary.
Implementation record insertion, deletion, modification.
An insert, delete command can handle a record
A modified command can handle all of the qualifying records in the table.
(it has and can only be a where condition, the attribute can be integer, character)
& lt; & lt; Delete operations to compress and rewrite the index files.
Unrewrote the data dictionary file. Because it changes the index value in the index file. & gt; & gt;
To achieve the mark deletion record
Implement the data dictionary index file to view.
Implement data dictionary file view.
Implement data table file view. Build tables, delete tables.
Implement search in index files.
You can search for "table", "view", "index" by "name" or "index".