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Hi Sreejith,
A database administrator is a person responsible for the installation, configuration, upgrade, administration, monitoring and maintenance of databases in an organization.
The role includes the development and design of database strategies, system monitoring and improving database performance and capacity, and planning for future expansion requirements. They may also plan, co-ordinate and implement security measures to safeguard the database.
*List of skills required to become database administrators are:
-Communication skills
-Knowledge of database theory & design
-Knowledge about the RDBMS itself, e.g. Oracle Database, IBM DB2, Microsoft SQL Server, MaxDB
-Knowledge of Structured Query Language (SQL) and procedural extension language, e.g. PL/SQL, SQL/PSM, Transact-SQL
-General understanding of distributed computing architectures, e.g. Client/Server, Internet/Intranet, Enterprise
-General understanding of the underlying operating system, e.g. Windows, Unix, Linux
-General understanding of storage technologies, memory management, disk arrays, NAS/SAN, networking
*Certification-
Employing organizations may require that a database administrator have a certification for the particular RDBMS being used.
Ex are Oracle Database 11g Administrator Certified Professional and MCITP Database Administrator 2008.
*Job title
DBA's are also known by the titles Database Coordinator or Database Programmer, although a database programmer requires more advanced skills in SQL programming than a DBA may have, and a Database Programmer may not have and does not require the skills of database administration, backing up, restoring, monitoring or tuning to do their job well.
The role is closely related to the other jobs of Database Analyst, Database Modeller, Programmer Analyst, and Systems Manager.
Some organizations have a hierarchical level of database administrators, generally:
Data Analysts/Query designers
Junior DBA's
Midlevel DBA's
Senior DBA's
DBA consultants
Manager/Director of Database Administration/Information Technology
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Wish you Luck!

Hi Poonam,
For making a career in banking, you can explore these finance/banking related courses:
1) Indian School of Business & Finance Delhi offers one year Post Graduation-Diploma in Wealth Management
2) Institute of Computer & Finance Executives (ICFE) Delhi offers 8 months Certified Accounts Executive course, 12 months Certified Finance Executive course, 10 months Certified Acc. Executive course
3) ICA Delhi offers 14 months Certified Industrial Accountant course
4) Institute of Computer Accountants - Tamil Nadu offers 1 year Certified Industrial Accountant course
5) BLB Institute of Financial Markets (BIFM)( http://www.bifm.edu.in) Delhi offers 14 months Post Graduate Diploma in Financial Planning & Wealth Management (PGD-FPWM)
6) The Indian Institute of Financial Planning (IIFP) Delhi offers 10 months CFP Certified Program
7) International College of Financial Planning (ICFP) Delhi offers 12 months Post Graduate Diploma in Financial Planning (PGDFP) and 22 months Post Graduate Diploma in Securities Analysis and Trading (PGDSAT).
You may also explore Indian Institute of Banking & Finance (http://www.iibf.org.in/) for Diploma in banking and finance. The Diploma in banking and finance of the IIBF is meant to give knowledge based inputs to the students to expose them to the operational processes and modern banking environment so that they can man the counters at the bank from the first day of their joining the bank. The diploma carries professional recognition among the banking and finance community as it is equivalent to banking industry recognized JAIIB qualification of IIBF. You may also explore Institute of Finance Banking & Insurance (IFBI) for a full time Post Graduate Diploma in Banking Operations program (PGDBO); Post Graduate Certificate in Retail Banking program (PGCRB); Post Graduate Diploma in Financial Planning (PGD-FP). For details check (www.ifbi.com).
You can refer the articles for more information:
https://www.shiksha.com/getArticleDetail/174/Banking-Nature-Of-Work?token=aa&page=1
You can also give exam for various banks for different post.
https://www.shiksha.com/your-guide-to-bank-po-exam-article-5521-1
https://www.shiksha.com/important-banking-exams-in-india-article-6441-1
Hope it helps. Please feel free to revert. Click on the thumbs up or mark it as the best, if you found this useful.
Wish You Luck!