self-service, and pay-as-you-go pricing.Cloudin this context refers to cloud computing architecture, encompassing both public and private clouds. But the public cloud has its own distinct set of advantages, which are hard
New features in Oracle 11g related to“Real Application Testing"or change assurance find a place in Oracle Database 11g. Oracle Database 11g allows the database infrastructure to become more resilient, efficient, and manageable. For instance, there are many compelling new features related to the ...
DDIA is right; not everydata warehouse(OLAP) needs to be a column store and not every OLTP is row based. In fact, I got into an argument during an interview because I made the point that data warehouses didn’t have to becolumnar. Why then do data professionals consider column store d...
Spark DataFrame or Dataset cachingby default saves it to storage level `MEMORY_AND_DISK` because recomputing the in-memory columnar representation of the underlying table is expensive. Note that this is different from the default cache level of `RDD.cache()` which is ‘MEMORY_ONLY‘. Syntax /...