Database Programming, Blocking, Sliding window patterns, Contention mitigation, Designing and tuning large scale databases, Cardinality estimation, Latches, B tree, Execution plans, Memory grants, Performance optimization, TempDB tuning, Indexing strategies, Deadlocks, Columnstore, In Memory OLTP, Locking, Isolation levels, Partitioning, DOP waits, Parallelism, SQL internals, Batch heavy workloads