Pengertian dan Fungsi DBMS (Database Management System)

Pengertian DBMS (Database Management System)
DBMS (Database Management System) merupakan sistem pengorganisasian data pada komputer. DBMS (Database Management System) adalah perangkat lunak yang memungkinkan untuk membangun basis data yang berbasis komputerisasi. DBMS (Database Management System) adalah perantara user dengan basis data sehingga dengan adanya DBMS (Database Management System), user akan dengan mudah mencari dan menambahkan informasi pada data base.

Untuk dapat mengakses DBMS (Database Management System) user harus menggunakan bahasa database, bahasa database terdiri dari beberapa intruksi yang digabungkan sehungga dapat diproses oleh DBMS. Perintah atau intruksi tersebut umumnya ditentukan oleh user, adapaun bahasa yang digunakan dibagi kedalam 2 (dua) macam diantaranya sebagaimana di bawah ini:

1. DDL (Data Definition Language)

DDL atau singkatan dari Data Definition Languange, yaitu dipakai untuk menggambarkan desain dari basis data secara menyeluruh. DDL (Data Definition Language) dapat dipakai untuk membuat tabel baru, memuat indeks, maupun mengubah tabel. Hasil dari kompilasi DDL akan disimpan di kamus data. Itulah definisi dari DDL.

2. DML (Data Manipulation Language)

DML atau singkatan dari Data Manipulation Language, yaitu dipakai untuk memanipulasi daan pengambilan data pada suatu basis data, misalnya seperti penambahan data yang baru ke dalam suatu basis data, menghapus data pada seuatu basis data dan mengubah data pada suatu basis data. Itulah definisi dar DML.

Fungsi dari DBMS (Database Management System)
Fungsi dari DBMS adalah sebagai penghubung antara user dengan database sehingga memungkinkan pengguna dapat mengakses database dengan cepat dan mudah. Adapun contoh-contoh dari DBMS (Database Management System) adalah : MySQL, Oracle dan microsoft SQL Server

Komponen-komponen dari DBMS (Database Management System)

  • File manager berfungsi untuk mengelola struktur data yang digunakan untuk mempresentasikan informasi yang tersimpan dalam disk.
  • Database Manager berfungsi untuk menyediakan interface antar data dengan program alikasi dan query
  • Query Processor berfungsi sebagai penterjemah perintah dalam bahasa query ke intruksi low – level yang dapat dimengerti database manager.
  • DML Precompiler berfungsi sebagai pengkonversi pernyataan atau perintah DML, yang ditambahkan dalam suatu program aplikasi kepemangin prosedur normal dalam bahasa induk.
  • DDL Compiler digunakan untuk mengkonversi berbagai perintah DDL ke dalam sekumpulan tabel yang mengandung metadata.
Pengertian dan Fungsi DBMS (Database Management System) Pengertian dan Fungsi DBMS (Database Management System) Reviewed by Mujiono on 2:59 AM Rating: 5

52 comments:

  1. Terkadang orang berfikir bahwa basis data dan DBMS itu sama, padahal mengacu pada hal berbeda. basis data lebih ke datanya dan DBMS lebih ke software untuk memelihara, mengontrol dan mengakses data.

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