We can store frequently accessed data into a cache. The client can query the cache first instead of visiting the database directly. If there is a cache miss, the client can query from the database. Caches like Redis store data in memory, so the data access is much faster than the data...
Figure 33 Example plan output highlighting the TQ (table queue) column for producers and consumers Data redistribution In the example above two large tables CUSTOMERS and SALES are involved in the join. In order to process this join in parallel, a redistribution of rows becomes necessary between ...
What is synchronous data communication? Consider a variant of the RR scheduling algorithm in which the entries in the ready queue are pointers to the PCBs. a. What would be the effect of putting two pointers to the same process in the read ...
When using EXPLAIN PLAN with parallel queries, the database compiles and executes one parallel plan. This plan is derived from the serial plan by allocating row sources specific to the parallel support in the QC plan. The table queue row sources (PX Send and PX Receive), the granule iterato...
The base part also defines thequeue. This is an array which holds10latest records selected. It is initialized in the base part with theidof the random track just selected The recursive part of theCTEjoins the previous record with the table, making sure that no record from the latest10will...
If you would like to learn more detail on the subject, I would recommendW3C’s clarification. CI/CD CI/CD Pipeline Explained in Simple Terms Section 1 - SDLC with CI/CD The software development life cycle (SDLC) consists of several key stages: development, testing, deployment, and maintenanc...
If you would like to learn more detail on the subject, I would recommend W3C’s clarification. CI/CD CI/CD Pipeline Explained in Simple Terms Section 1 - SDLC with CI/CD The software development life cycle (SDLC) consists of several key stages: development, testing, deployment, and maintena...