SQL is a programming language that is used to communicate with databases and is pervasive across applications and support tools used in the IT field. An SQL programmer designs tables, writes queries and ensures their optimal performance, and works with database data. Exposure to SQL would do a world of good on the career front, whether one wants to be a business analyst, data engineer, web developer or a database administrator. From a company’s perspective, an SQL assessment is an absolute must to gauge a candidate’s expertise in this language.
Essential Skills of SQL Developers
Managing a Database
SQL mastery begins with understanding a database, learning database tables and knowing how to structure a database from scratch. An aspiring IT and data science professional should be able to manage and administer an SQL database and set it up for scalable growth.
Working with Database Systems
SQL interacts with databases, but MySQL is the database management system that actually stores the data. An SQL developer should learn to work with MySQL and other popular database management systems in order to manage access, limit users and perform other tasks of a database manager.
MySQL and PHP often work in tandem with each other. PHP is an open source programming language that interacts with MySQL. Knowledge of MySQL and PHP technologies is helpful in tackling a wide range of projects. WAMP (Windows, Apache, MySQL, and PHP) in conjunction with SQL can manage extremely large sets of data such as Big Data.
Learning Capacity Planning
An SQL developer needs to possess good capacity planning skills. He must know the limits of the server platform in executing queries, the space needed for data, indexes and logs. He should also be able to keep a tab on resource usage and capacity utilization.
Studying SQL types
An SQL developer should have an in-depth knowledge of SQL types, pertaining to logic, performance and storage, and understand the importance of grouping changes and isolation levels. Equipped with this knowledge, developers can access SQL features to update data sets.
Why Learn SQL?
SQL is used directly or indirectly across an IT department. A person who has a working knowledge of SQL can therefore gain immensely from the various data tools that are in use.
Network Administrators use a tool called SolarWinds, which stores its back-end data in an SQL server database. SolarWinds can generate great reports, but a custom metric such as network up-time at a remote location can only be created and accessed via SQL.
Desktop Engineers make use of SCCM (System Center Configuration Center) to manage servers and desktops. SQL makes it easier to reach the data store and write better custom reports by piecing the data together. Developers can gain immensely from SQL; they can enhance the performance of their programs by knowing how programs interact with the database.
To conclude, anyone aspiring for a lucrative programming career should learn SQL as even rookie SQL developers make upwards of $60,000 a year.
This article was previously published on Learn@ITB by Andini Nurfatimah