A primary key ensures unique row identification. This results in faster sorting, searching, and querying operations. A foreign key creates a link between two tables. It maintains referential integrity between the referencing column(s) and the referenced column(s). Does primary key make query faster? Having a primary key per se will not speed up queries. Primary key constraints are usually accompanied …
Super Key is an attribute (or set of attributes) that is used to uniquely identifies all attributes in a relation. Primary Key is a minimal set of attribute (or set of attributes) that is used to uniquely identifies all attributes in a relation. 2. All super keys can’t be primary keys. What is the another name of super key? Super …
Syntax errors: Errors that occur when you violate the rules of writing C/C++ syntax are known as syntax errors. This compiler error indicates something that must be fixed before the code can be compiled. All these errors are detected by compiler and thus are known as compile-time errors. Does a compiler detect syntax errors? All syntax errors and some of …
In programming, an event handler is a callback routine that operates asynchronously once an event takes place. It dictates the action that follows the event. The programmer writes a code for this action to take place. An event is an action that takes place when a user interacts with a program. What is the term handler mean? ˈhan-dᵊl-ər. : one …
A port or berth will be unsafe if the ship is unable to reach the port safely. For example a port may be considered unsafe even if the ship suffers damage during its passage on a river or channel when approaching a port. What is an unsafe port? A port or berth will be unsafe if the ship is unable …
All the SQL statements start with any of the keywords like SELECT, INSERT, UPDATE, DELETE, ALTER, DROP, CREATE, USE, SHOW and all the statements end with a semicolon (;). The most important point to be noted here is that SQL is case insensitive, which means SELECT and select have same meaning in SQL statements. How many syntax are there in …
A dual monitor setup makes it possible for you to enjoy multitasking while playing your favorite video games. This extra screen real estate can be used as a desktop for web browsing, watching videos, or for displaying walkthroughs and other information for a game. Why are dual monitors better? The key benefit is obvious. Two screens effectively extend your visual …
How many monitors can a GTX 1050 support? You can run 3 monitors no problem, just don’t expect to use Nvidia surround with it very well. If you’re just wanting say a monitor for your web browser, one for game, and one for social stuff then that will work no problem. How many monitors can a GTX 1050 support? Depends …
A triple monitor setup is a great investment if you want to increase your productivity when working. The extra display will help you work more efficiently – especially when coding. On three monitors, you can see more at any one time without having to change windows or toolbars as you move back and forth between them. Is it worth having …
1) On your keyboard, press the Windows logo key and R at the same time to invoke the Run box. 2) Type devmgmt. msc and click OK. 3) Double click Universal Serial Bus controllers (or any other categories that your USB C device belongs to), then right click on your USB-C device, and click Update driver. Does USB-C need a …