Denormalization refers to approaches for accessing information in lower forms in a database, beginning with higher forms of data. The next component, which ensures consistency and dependability in a table, benefits the managers by improving the performance of the entire scenario. The consistent data ...
Conditional Statements:These includeIFandCASEstatements, which execute different blocks of code based on conditions.TheDECODE() functionis another good example of a conditional that is worth studying. Intermediate PL/SQL Interview Questions Having covered the basic questions, now let's move on to some...
This scenario can be better implemented by logging all the necessary data into a separate table, and have a job which periodically checks this table and does the needful. 24. What is a self join? Explain it with an example Self join is just like any other join, except that two instances...
SQL-based technologies have a lot in common, and all SQL developers need certain skills to succeed. However, there are many aspects specific to a given SQL engine (like PostgreSQL or MySQL), role (administrator or architect), or optimization scenario (data marts, data lakes, or data warehouse...
I'm frequently asked about questions that are asked when interviewing candidates for Sql Server... Date: 05/29/2007 Large log backups with bulk operations and read-only databases So, here's an interesting scenario I ran into a few weeks back. A customer had a situation in which... Date...
In this case we would use JObject & JToken to fetch the product data as we would not able to generate the static classes for this scenario as the parent node has dynamic values which would change on run-time. static void Main(string[] args) { List<product> products = new List<product...
Why do companies hire SQL Developers? Companies typically hire SQL engineers to handle data interactions and migrations across multiple SQL engines. Even for companies without any DBMS in place, SQL developers can recommend the most appropriate DBMS and optimize database structure and code toward it....
The idea of applying a priority boost is a familiar one from OS scheduling. This serves to avoid the priority inversion that can be caused in the below scenario: Many threads wait for a resource The low priority thread eventually gets its turn, is assigned ownership and made runnable, while...
Brian explains the benefits with an example helping the data warehouse scenario and where this feature is currently available based on the locations. Brain says his new resolutions for this year includes more physical exercises, meditation and being up to date with the Data platform news. Great ...
I'm frequently asked about questions that are asked when interviewing candidates for Sql Server...Date: 05/29/2007Large log backups with bulk operations and read-only databasesSo, here's an interesting scenario I ran into a few weeks back. A customer had a situation in which...Date: 05...