S.no PostgreSQL SQLServer
1. Microsoft’s relational DBMS Widely used open source object-relational database management system
2. Implementation language is C. The implementation language is C++.
3. Supports server is operating systems such as HP-UX, NetBSD, Solaris, Windows, Unix, Linux, and FreeBSD. Supports only Linux and Windows.
4. Doesn’t has the in-memory capability. Has in-memory capability.
BY Best Interview Question ON 15 Apr 2020