Teensy-Weensy-Database

In this project, I have tried to clone the sqlite database from Scratch in C++. The two major parts of this project are : a). Parsing of User Input. b). Implementation of B+ trees to understand How database Indexes are Formatted. Right now , only one hard coded table is supported in this database in which users can Insert , Select and See the format of database indexing (How the data is stored in disk.). This is an open ended project.Like:

• SQL compiler needs to be added for better parsing.
• More generic approach is needed so that users can insert their own table. So anyone who wants to help in making this library generic is welcomed.

Compile :

make :

• This command will create the static library of database files which are stored in db_lib folder and link that library with the main.cpp file which acts as an application file to work with this database.

Run :

• ./exe (add name of your database as an argument)

Output :

Documentation:

Table provided in this database is of the type - Id(Integer), Name(String), Email(String) There are 2 methods to interact with the library.

Method 1 : Use database as a Read Evaluate Print Loop:

• Navigate to main.cpp file and include connect.h in this.
• Inside main function:
  • Create an object of type database as : database db = new database;*
  • Call connect_db_console() using pointer object declared in the first step as : db->connect_db(argc,argv,db);
• Compile and Run.
• This will provide you a console to interact with database.
• Currently this library provides these functions to work on termina:
  • insert (Inserts data in the database)
  • select (Dumps all the data present in database)
  • search (Search the record based on the ID)
  • .btree (Shows to B+ tree structure of data: How data is stored in the database)
  • .exit (Commits all the data in disk , closes database connection and terminates the console)

Method 2 : Link library with a program:

• Functions declared in connect.h header file can be used by the programmers to interact.
• Navigate to main.cpp file and include connect.h header file in this.
• Inside main function:
  • Create an object of type database as : database db = new database;*
  • Call connect_db() using pointer object declared in the first step as : db->connect_db(argc,argv,db);
• This function opens a connection to the database.
• This will provide you a console to interact with database.
• Currently this library provides these functions
  • db->insert() (Inserts data in the database)
  • db->print_db() (Dumps all the data present in database)
  • db->print_tree() (Shows to B+ tree structure of data: How data is stored in the database)
  • db->close_db() (Commits all the data in disk , closes database connection and terminates the console)