puede usar el nombre de la universidad como clave externa en la tabla de estudiantes, asegúrese de que ambas tablas de columnas tengan un nombre de columna diferente, solo asegúrese de COLUMN_ID ="id" que COLUMN_ID ="s_id"
// Nombre de la base de datospublic static final String DATABASE_NAME ="detalles.db";
// Table 1
public static final String TABLE_NAME = "CollegeName";
public static final String COLUMN_ID = "c_ID";
public static final String COLUMN_TITLE = "college_NAME";
private static final String COLUMN_IMAGE = "image_bitmap";
// Table 2
private static final String TABLE2_NAME = "studentsName";
public static final String COLUMN1_ID = "s_ID";
public static final String COLUMN2_TITLE = "students_NAME";
public void onCreate(SQLiteDatabase sqLiteDatabase) {
String query =
"CREATE TABLE IF NOT EXISTS " + TABLE_NAME + "("
+ COLUMN_ID + " INTEGER PRIMARY KEY ,"
+ COLUMN_TITLE + " TEXT, "
+ COLUMN_IMAGE + " BLOB );";
sqLiteDatabase.execSQL(query);
String query1 =
"CREATE TABLE IF NOT EXISTS " + TABLE2_NAME + "("
+ COLUMN1_ID + " INTEGER PRIMARY KEY ,"
+ COLUMN2_TITLE + " TEXT ,"
+ COLUMN_C_ID + " INTEGER, " + "FOREIGN KEY("+
COLUMN_C_ID +") "
+ "REFERENCES " + TABLE_NAME +"("+COLUMN_ID +")"+ ");";
sqLiteDatabase.execSQL(query1);
}