What can you tell about WAL (Write Ahead Logging)? How do you check the rows affected as part of previous transactions? What do you understand by command enable-debug? What do you understand by multi-version concurrency control? Can you explain the architecture of PostgreSQL? What are ACID properties? Is PostgreSQL compliant with ACID? How can you delete a database in PostgreSQL? How can you get a list of all databases in PostgreSQL? What is the capacity of a table in PostgreSQL? What is the importance of the TRUNCATE statement? What are partitioned tables called in PostgreSQL?
How can we start, restart and stop the PostgreSQL server? What is the command used for creating a database in PostgreSQL? How will you change the datatype of a column? How to create empty tables with the same structure as another table? What is Collation? What are the different types of Collation Sensitivity? What are the differences between OLTP and OLAP? What is User-defined function? What are its various types? What is the difference between DELETE and TRUNCATE statements? What is the difference between DROP and TRUNCATE statements? What are the TRUNCATE, DELETE and DROP statements? What are the various forms of Normalization? List the different types of relationships in SQL. What are UNION, MINUS and INTERSECT commands? What are some common clauses used with SELECT query in SQL? What is the difference between Clustered and Non-clustered index? What is an Index? Explain its different types. What is a Join? List its different types. What is the difference between SQL and MySQL? What is RDBMS? How is it different from DBMS?
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