Create a database SELECTION

Question

Create a database SELECTION_DB

13 Sep 2024

Answer :

Word Count : 1293

To create a database named `SELECTION_DB` and interact with it using both C and Python, you need to follow several steps. This process involves creating the database, designing its schema, and then performing operations like data insertion, querying, and retrieval in both languages. I'll guide you through creating and managing the `SELECTION_DB` using SQL commands and demonstrate how to interact with it using C and Python.

### Creating the Database

First, let's outline the SQL commands needed to create a database and a simple table within it. For this example, we will use SQLite as it is a lightweight and easy-to-use database system that supports both C and Python.

SQL Commands to Create the Database and Table:

1. Create the Database:

In SQLite, you don't need a specific command to create the database itself. When you connect to a database that doesn’t exist, SQLite will automatically create it.

2. Create the Table:

```sql
CREATE TABLE IF NOT EXISTS students (
id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT NOT NULL,
age INTEGER NOT NULL,
grade TEXT NOT NULL
);
```

### C Implementation

In C, you use the SQLite library to interact with the database. Here is a step-by-step guide to perform basic operations:

1. Include SQLite Header:

```c
#include <stdio.h>
#include <sqlite3.h>
```

2. Open/Create Database:

```c
int createDatabase(const char *filename) {
sqlite3 *db;
int rc = sqlite3_open(filename, &db);

if (rc) {
fprintf(stderr, "Can't open database: %s\n", sqlite3_errmsg(db));
return rc;
} else {
fprintf(stderr, "Opened database successfully\n");
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