In databases, a primary key is a unique identifier for each record in a table. It ensures that each record can be uniquely identified and is used to establish relationships between different tables. A super key is a set of one or more columns that can be used to uniquely identify a record in a table. A candidate key is a minimal super key, meaning it is a super key with the fewest possible columns. It is a potential candidate for being the primary key of the table. **

The Corsair K95 RGB Platinum XT is a good keyboard that features individual key RGB lighting and macro keys. It offers per-key RGB backlighting with customizable colors and effects, allowing users to personalize the keyboard to their preferences. Additionally, the K95 RGB Platinum XT comes with six dedicated macro keys, which can be programmed to execute complex commands or shortcuts with a single press, making it a great choice for gamers and power users. **

Some keys on your Razer keyboard may not be lighting up due to a potential hardware issue, such as a faulty LED or connection. It could also be a software issue, such as a glitch in the keyboard's firmware or the Razer Synapse software. Additionally, if the keyboard has been exposed to liquid or physical damage, it could also cause certain keys to stop lighting up. It is recommended to check for any software updates, clean the keyboard, and if the issue persists, contact Razer support for further assistance. **

The car keys and apartment keys are located on the key holder by the front door. **

Volkswagen vehicles typically use a variety of different keys, including traditional metal keys, key fobs, and keyless entry systems. The exact number of different keys for VW vehicles can vary depending on the model and year of the vehicle. Additionally, some VW vehicles may have specialized keys for features such as valet mode or emergency access. Overall, there is not a single number that represents the total different keys for VW vehicles, as it can vary based on the specific vehicle and its features. **

To swap the WASD keys with the arrow keys, you can typically do so by accessing the keyboard settings on your computer. This can usually be found in the control panel or system preferences. Once in the keyboard settings, you can remap the keys to switch the functions of the WASD keys with the arrow keys. This allows you to use the arrow keys for movement in games or other applications that typically use the WASD keys for navigation. **

Weighted keys and touch-sensitive keys are not the same thing. Weighted keys refer to the physical resistance and feel of the keys, simulating the feel of an acoustic piano. Touch-sensitive keys, on the other hand, respond to the force with which they are played, producing different levels of volume and expression. While some digital pianos may have both weighted and touch-sensitive keys, they are distinct features that serve different purposes in replicating the feel and expression of an acoustic piano. **

Yes, you can adjust the lighting of individual keys separately on a Razer keyboard that supports per-key RGB customization. Using the Razer Synapse software, you can customize the lighting effects, colors, and brightness of each key to create unique lighting profiles. This level of customization allows you to personalize your keyboard's lighting to suit your preferences and create stunning visual effects. **