DATABASE ADMINISTRATOR Pertemuan ke1 DatabaseDBMSDatabase Administrator INTRODUCTION DATABASE

DATABASE ADMINISTRATOR Pertemuan ke-1

Database-DBMS-Database Administrator INTRODUCTION

DATABASE Sekumpulan data yang saling berhubungan

RDBMS perangkat lunak yang mengatur dan mengorganisasi penyimpanan database kedalam komputer

STRUKTUR PENYIMPANAN EMPLOYEE_ID LAST_NAME FIRST_NAME SALARY COMMISION_PCT BARIS DEPARTMENT_ID NULL PK KOLOM FK FIELD

HOW THE DATA IS ORGANIZED Employees Emp_Id Last_Name Departments First_Name Dept_Id Foreign Key Primary Key Dept_Name

RDBMS MARKET s. HARE

COMPUTER & CAREER OPPORTUNITY Information Worker IT Professional Software Developer

DATABASE ADMINISTRATOR Orang yang memastikan fungsi operasional aplikasi dan database organisasi dapat berjalan secara efisien

MANAGEMENT DISCIPLINE OF DBA REACTIVE PROACTIVE Menghadapi masalah Menghindari masalah Fokus terhadap masalah besar yang dihadapi Mengembangkan dan menerapkan Blueprint’ Blueprint untuk mengaplikasikan database A good DBA is integral to the entire application development life cycle.

DATA, DATABASE, AND SYSTEM ADMINISTRATOR DATABASE DATA • responsible for understanding the business lexicon and translating it into a logical data model • involved more in the requirements gathering, analysis, and design phase • responsible for using the DBMS • Involved in the design, development, testing, and operational phases. • will transform the logical data model into an efficient physical database design • the conduit for communication between the DA team and the technicians and application programming staff. SYSTEM • responsible for DBMS installation, modification, and support • ensures that the IT infrastructure is operational for database development by setting up the DBMS appropriately, applying ongoing maintenance from the DBMS vendor, and coordinating migration to new DBMS releases and versions

DATA, DATABASE, AND SYSTEM ADMINISTRATOR IT Infrastructure Data and Metadata Policy Analysis Design Development Testing Implementation (database, application) Maintenance & Tuning System Administrator DBA (if no SA) Data Administrator Database Administrator (if no DA) Database Administrator

DA task • Identifying and cataloging the data required by business users • Producing conceptual and logical data models to accurately depict the relationship among data elements for business processes • Creating an enterprise data model that incorporates all of the data used by all of the organization's business processes • Setting data policies for the organization • Identifying data owners and stewards • Setting standards for control and usage of data

SA Task • ensures that the IT infrastructure is operational for database development • setting up the DBMS appropriately • applying ongoing maintenance from the DBMS vendor • coordinating migration to new DBMS releases and versions.

TASKS OF DBA Database Design Data Integrity DBMS Release Migration • transform a logical data model into a physical database implementation • database design and implementation will enable a useful database for the applications and clients • A database must be designed to store the correct data in the correct way without that data becoming damaged or corrupted • keeping the DBMS running and up-to - date is an ongoing effort that will consume many DBA cycles Performance Monitoring & Tuning Backup and Recovery • optimization of resource usage to increase throughput and minimize contention. • The DBA must be prepared to recover data to a usable point, no matter what the cause, and to do so as quickly as possible DB Availability • keeping the DBMS up and running • data is available whenever applications and clients require it DB Secirity & Authorization

TASKS OF DBA: DATABASE DESIGN • the DBA must understand – relational design practices. – relational theory and the specific implementation of the relational database management system (RDBMS) – conceptual and logical data modeling techniques. The ability to create and interpret entity-relationship diagrams is essential to designing a relational database.

Type of DBA • System DBA – A system DBA focuses on technical rather than business issues, primarily in the system administration area – Indeed, the job of system DBA usually exists only if the organization does not have an official system administration or systems programming department. • Database Architect – The database architect is involved in new design and development work only.

• Database Analyst – – – • Sometimes junior DBAs are referred to as database analysts. Sometimes a database analyst performs a role similar to that of the database architect. Sometimes the data administrator is referred to as the database analyst or perhaps as the data analyst Data Modeler – A data modeler is usually responsible for a subset of the DA's responsibilities

• Application DBA – contrast to the system DBA is the application DBA. – The application DBA focuses on database design and the ongoing support – administration of databases for a specific application or applications. – The application DBA is likely to be an expert at writing and debugging complex SQL

• Task-Oriented DBA – quite rare outside of very large IT shops. – One example of a task-oriented DBA is a backupand-recovery DBA who devotes his entire day to ensuring the recoverability of the organization's databases. – The performance analyst is usually the most skilled, senior member of the DBA staff.

• Data Warehouse Administrator – DBAs specifically to monitor and support the data warehouse environmen

Tugas • Cari definisi dan perbedaan setiap DBMS terkait – Vendor pembuat – Kelebihan dan kekurangan – Contoh penerapan • Cari sertifikasi apa saja yang berkaitan dengan seorang DBA lengkap dengan penjelasannya