Explanation:
The wake-up receiver is an ultra-low power chip that continuously looks out for a specific radio signal, called a wake-up signature, that tells it when to wake up the main device
Answer:
"To create any of these Greek letters using the Alt codes, simply press the "Alt" key while simultaneously typing the listed number. For example, to create the Greek letter Alpha (α), press the "Alt" key and type 224 using the keypad at the right side of your keyboard." - GOOGLE
Unfortunately, you didn't share the list of sources of competitor information so it is getting difficult to give the answer which will suit the task. But since you have to choose non-online database the most popular one is internal employee group.
Hope that will help you in some measure.
A primary key is a field that contains data unique to a record
