DB put is a function or method in C++ that is used to insert data into a database or to update existing data. Depending on the package library one is using, the syntax and functionality of the put method may vary.
Example #1: Using Berkeley DB library
Berkeley DB is a popular embedded database library that supports many programming languages including C++. The put() method in Berkeley DB is used to store data in the database.
DB* db; int ret;
ret = db_create(&db, NULL, 0); if (ret != 0) { // handle error }
ret = db->open(db, NULL, "my_db.db", NULL, DB_BTREE, DB_CREATE, 0); if (ret != 0) { // handle error }
ret = db->put(db, NULL, &key, &data, DB_NOOVERWRITE); if (ret != 0) { // handle error }
In this example, we create a new instance of the Berkeley DB object and initialize it. Next, we open the database file and insert some data into it using the put() method. The key and data values are stored in DBT objects which are used as parameters to the put() method.
Example #2: Using SQLite library
SQLite is a popular database library that is widely used in mobile and desktop applications. In C++, we can use the SQLite3 library to access the SQLite database.
sqlite3* db; int ret;
ret = sqlite3_open("my_db.db", &db); if (ret != SQLITE_OK) { // handle error }
const char* sql = "INSERT INTO my_table (key, value) VALUES ('my_key', 'my_value')"; ret = sqlite3_exec(db, sql, NULL, NULL, NULL); if (ret != SQLITE_OK) { // handle error }
In this example, we open a new connection to the SQLite database and execute an SQL query to insert data into the my_table table. The put() method is not used explicitly, but the underlying SQL query achieves the same goal.
Package library: Berkeley DB or SQLite3
C++ (Cpp) DB::put - 30 examples found. These are the top rated real world C++ (Cpp) examples of DB::put extracted from open source projects. You can rate examples to help us improve the quality of examples.