Postgres, formally known as PostgreSQL, is an advanced, open-source, high-performance, and stable object-relational database system that leverages and extends the SQL language combined with many robust features to comfortably support complex web services or apps. This system uses and extends the SQL (Structured Query Language) merged with numerous features to safely store and scale the most complicated data workloads.
Companies seek candidates with this proficiency for roles primarily linked with database management, such as Database Administrator, Back-End Developer, and Data Analyst. Postgres comes with many add-ons such as creating complex procedures due to its native support for languages like Perl, Python, and Tcl. It provides a flexible system for building and executing complex queries, enabling users to build external modules to perform tasks that are best suited to server-side operations.
Postgres provides advanced features such as Multi-Version Concurrency Control (MVCC), point in time recovery, tablespaces, synchronous replication, and more. Having mastery over these features allows for effective database management, creating more efficient workflows, and ensuring data integrity.
Understanding the core principles of database management systems and SQL are key to learning or mastering Postgres. Familiarity with other related technologies like MySQL or Oracle Database could also provide a suitable foundation due to their shared principles and operations with Postgres. Additionally, knowledge of server-side languages such as Python, Perl, or Tcl, is beneficial as Postgres extends support to these languages.
In conclusion, mastery of Postgres translates into strong database management capabilities, and efficient utilization of resources, crucial to several tech job roles. It's highly recommended for individuals aiming for advanced roles in database management, back-end development, and data analysis. Continuous learning and practice will seal proficiency in this in-demand skill.