Thrilled to share that I have successfully completed the Database Management Systems course by CodeChef 📜🎓. This course strengthened my understanding of core DBMS concepts including SQL, relational ...

Hi, connections..... I am glad to share that I have received a certificate for completing all the lessons of Learn SQL from CodeChef #sql #codechef ...

Count positions where characters differ without '?' (fixed differences) and positions where at least one character is '?' (flexible differences). Minimum differences come from fixed mismatches, and ...