what is the purpose of database administrator? explain
Answers
Answer:
Database administrators (DBAs) use specialized software to store and organize data. The role may include capacity planning, installation, configuration, database design, migration, performance monitoring, security, troubleshooting, as well as backup and data recovery.
Explanation:
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A database administrator (DBA) is the information technician responsible for directing or performing all activities related to maintaining a successful database environment. A DBA makes sure an organization's database and its related applications operate functionally and efficiently.
Importance of a DBA
If your organization uses a database management system (DBMS) for mission-critical workloads, it is important to employ one or more database administrators to ensure that applications have ongoing, uninterrupted access to data. Most modern organizations of every size use at least one DBMS, and therefore the need for database administrators is greater today than ever before.
The DBA is responsible for understanding and managing the overall database environment. By developing and implementing a strategic blueprint to follow when deploying databases within their organization, DBAs are instrumental to the ongoing efficacy of modern applications that rely on databases for data storage and access.
Without the DBA's oversight, it is inevitable that application and system outages, downtime and slowdowns will occur. Problems such as these result in business outages that can negatively affect revenue, customer experience and company reputation.
DBAs are the subject matter experts for database management systems and all related topics, including DBMS implementation and configuration; database design; SQL coding; data extraction, transformation and loading (ETL); test data management; problem resolution; data integrity; database security; optimization; and database backup and recovery.
Database administration is a vital component of the IT environment for any organization that relies on one or more database management systems.
Roles and Responsibilities
A DBA can, and does, assume many different roles and responsibilities within the IT department involving database systems and applications. When adopting a new DBMS, the DBA is responsible for designing, implementing, and maintaining the database system. Often, this includes installing the DBMS and setting up the IT infrastructure to allow applications to access databases.
The DBA also must establish policies and procedures pertaining to the management, security, maintenance and use of the database management system. The DBA group creates training materials and instruct employees in the proper usage and access of the database management system.
When problems arise, the DBA is the focal point for resolution, including troubleshooting, root cause analysis, fine tuning and optimizing the performance of tasks and programs that access the database.
The DBA is responsible for ensuring that databases and data are backed up appropriately and can be recovered correctly and quickly in the event of failure. Furthermore, the DBA ensures that databases are protected and secured. The DBA enacts measures to maintain the database integrity in terms of data accuracy and makes sure that unauthorized users cannot access the data.
The DBA frequently gets pulled into other projects as a subject matter expert on the database. Because databases are at the center of most modern application development projects, the DBA participates in the database integration and use in a variety of IT projects. This exposure to many different technologies and experiences can make the DBA a valuable IT technician not just for database-related issues, but for other technologies as well.
Additionally, DBAs must be good communicators. They need to be able to converse and work with application programmers, business end users, IT and business managers and other DBAs.