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SQL database implemented in C#

Database

SQL database implemented in C#

Guide to implementation source files:

Public.cs = public interface.

WebServer.cs = main program, http web server ( example client ).

Init.cs = SQL initialisation script.

Compile.bat is file to compile source ( will need editing depending on version of .NET you have installed ).

SQL-independent ( namespace DBNS )

Database.cs = implements Database.

Log.cs = log file to ensure atomic updates.

Stream.cs = fully buffered stream for Rollback/Commit.

Table.cs = implementation of TABLE.

IndexFile.cs, IndexPage.cs = implementation of INDEX.

Util.cs = various utility classes.

SQL-specific ( namespace SQLNS )

SqlExec.cs = parsing and execution of SQL statements.

Block.cs = list of statements for execution.

Exp.cs, ExpStd.Exp = scalar expressions.

TableExp.cs = table-valued expressions.

Group.cs = implementation of GROUP BY.

Sort.cs = implementation of ORDER BY.

IdSet.cs = optimisation of WHERE.

Configuration

The database files are stored in C:\Databasefiles\Test\ this directory needs to be created. See webserver.cs to change the location. Also, permission to listen needs to be granted, e.g.

netsh http add urlacl url=http://+:8080/ user=GEORGE-DELL\pc

Again, see webserver.cs to change the http setup. If localhost is used, no permission is needed.