Introduction –
Can you imagine the world without data? From household grocery list or accounts to giant industries, the data is everywhere. There are only two things growing in the mundane world – One is population and second is Data. Rather tremendous and unbounded growth of data is the result of population. And there won't be a second opinion that this growth will never stop. So, then emerged various computerized database management systems. RDBMS has been the most popular of them. RDBMS stands for Relational DataBase Management System.
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What is SQL? –
SQL expands to Structured Query Language. It is a domain-specific language prescribed as standard for to be used to access, manipulate and administer the data stored in RDBMS. While Dr E F Codd proposed the relational model for the big databases, he postulated in one of the, his most popular 12 rules for relational database model, that all the access and handling of the data in RDBMS should be non-procedural or by declarative means to imitate the real world. Declarative means, you only need to say in a simple English like statement form, what you want and not describe how to get it. For example – an officer wanting to get the information about employees from the relevant register will simply issue directive to his clerk – "get me data from employees register", that's it. An equivalent of this in SQL will be – SELECT * FROM employees; where "employees" is the name of a table – a simple structure in the form of columns and rows.
Job Opportunities in SQL –
1. SQL Developer : Writing and applying various queries for handling and manipulation of data
2. SQL Tester : Validate the database for correct and valid data to be loaded in the database
3. SQL Data Application Interface Developer : Connecting to a database and manipulate the data from an application developed in FRONT END language like Java, PHP, Python, etc.
4. Data Scientist : An emerging field – Mining the data and making predictions after analyzing the data.
5. BI Developer : BI stands for Business Intelligence. Working with Data Warehouses & Data Marts.
6. BI Admin : ETL (Extraction – Transformation - Loading) jobs, Monitoring and publishing DWH reports
7. Cloud Database Expert : Working with Cloud Databases like AWS, AZURE, etc.
8. Data Migration Engineer : Transferring the data from one database system to another
9. Data Analyst : Create key performance indicators to analyse data and use it further
10. Database Admin : Maintaining database servers, designing physical and logical storage, security, backup & recovery and monitoring performance
The above 10 names of job positions are always in top demand and this list is not exhaustive. About 60% of the total jobs in the world of Information Technology are database related. They all require a solid foundation of knowledge in SQL. SQL is ANSI standard language and so it does not matter which particular database system from a vendor you are supposed to work on.
Career Outlook –
Every moment is just the right time to launch career with proficiency in SQL language in this data concentric world. There are not as many opportunities in other fields as there are in the field of SQL. If www.payscale.com is to be believed then the salary comparison metrics across various SQL centric roles in US $, range from $62,647 for lowest junior SQL developer to whopping $1,31,630 for a production database administrator. But the first step starts with SQL developer remember, which opens a wide range of growth opportunities.
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Conclusion –
The career path with SQL as primary or secondary skill, heads towards a perpetual career with high expectations and salaries in the highest range, they all being extremely specialized jobs. Mastering SQL is comparatively much easy and SQL being universal language you don't need to be specialized in any particular database management system provided by any vendor. As we are in Data-driven world where social media, Business forecast, Predicative analysis are in high demand across data world, so there is a huge increase in number of websites tied along with social media platforms like Facebook, Twitter, LinkedIn etc. generating large volume of data ending up in complex data warehouses, will increase the growth for jobs with SQL proficiency.
It is a high demand skill in the data-driven computer industry. It will be there until the end of the world because we all live with data everywhere so SQL professionals demand will never diminish.