Priyanshu Tiwari

Interview Prep: DBMS

Posted on Dec 25, 2020
  • Explain ACID.
  • SQL vs NoSQL.
  • Types of sql commands(ddl, dml, dcl, tcl)
  • Explain inner, outer, left, right, cross and full join.
  • When to use sql(or nosql) database ?
  • Vertical or horizontal scaling.
  • DELETE vs TRUNCATE vs DROP.
  • Normalization and Denormalization.
  • 1NF vs 2NF vs 3NF vs BCNF.
  • Shared and exclusive lock.
  • Explain types of keys.
  • NULL values in dbms.