3. Implement the data provider services. For example, implement data storage of the data provider by using a database, reading and writing files, or accessing the network.
```ts
letDB_NAME="DB00.db";
letTBL_NAME="TBL00";
letDDL_TBL_CREATE="CREATE TABLE IF NOT EXISTS "
constDB_NAME="DB00.db";
constTBL_NAME="TBL00";
constDDL_TBL_CREATE="CREATE TABLE IF NOT EXISTS "
+TBL_NAME
+" (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, age INTEGER, isStudent BOOLEAN, Binary BINARY)";