関連ワード:  different database models in dbms    different data models in dbms    types of database models in dbms    types of data models in dbms    types of data models in dbms pdf    types of data models in dbms with diagram    types of data models in dbms with examples    types of data models in dbms class 10    types of data models in dbms ppt    types of data models in dbms geeksforgeeks