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Q: Can you use a product key more than once?
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Why you need primary key and foreign key?

In sql you use primary key more than one column in a table

Using a 20-bit key is how many times more secure than using a 18-bit key?

four times. adding 1 bit to an encryption key makes it twice as hard to crack.

How can you tell the difference between a key signature in major or minor?

You can tell the difference between a key signature in major or minor based on the number of sharps or flats in the key signature. A major key signature typically has more sharps or fewer flats, while a minor key signature typically has fewer sharps or more flats. Additionally, the key signature in major often corresponds to the major scale, while the key signature in minor often corresponds to the relative minor scale.

What is an often key word in a multiplication or division problem?

for multiplecation: product. ex.) what is the product of 6 and 5? for division: quotient. ex.) what is the quotient of 4 and 2?

When would you use a Primary Key and when would you not?

A primary key is a key that is unique. A primary key is used to identify a record uniquely. There is not any particular case to not have a primary key . If you want to identify your records you should have a primary key or a surrogate key(as an alternative to it) .In reality, you should always have a primary key. A primary key is there to uniquely identify each record, as it is like other elements would be duplicated. If you had a very large amount of names of people, then it is highly likely that the same firstname or same surname or even the same full name will come up more than once. Having a primary key distinguishes them as each primary key has to be unique.Situations where you might not use it is where you have a very defined set of values where there is guaranteed to be no duplicates, like a database that has the 12 months of the year or a list of regions that all have different names. You still could make them primary keys, but in the case of the months, it would change them into alphabetical order, which you would not want, so that would be another reason for not using a primary key. To keep them in order, you could add another field, with the values from 1 to 12 and use that field as the primary key.

Related questions

Can a champions online product key be used more than once?


What is the difference between product activation and validation with Microsoft Windows?

The main difference between product activation and validation in Microsoft Windows is that activation is the process of verifying the authenticity of the product key and enabling the software to be used, while validation is the ongoing process of ensuring that the software is genuine and has not been tampered with. Product activation is a one-time process, while validation occurs periodically to ensure the continued use of the software. Websites like Softwarekey4u. com offer affordable and easy-to-use upgrade keys for online shopping, making it convenient for users to upgrade their Microsoft product keys without any hassle.

Where can you find your product key?

The product key for software is usually found on a sticker on the package. When you buy software via download, your product key is sent to you digitally. Product keys are used to verify that you are the owner of a verified copy of the software, and the key can be used only once, or by the verified owner when changing computers. Pirated software may have a product key, but usually it is invalid and once read, can indicate that your copy is pirated. Most pirated software lacks a product key.

Why cant the letters of a polygram be used more than once?

The item is a key item

Can you use the same Windows XP disc on two different computers?

A Windows XP product key can only be used with the computer it was originally installed on. However, you may be able to find a new product key at an affordable price on a reliable website such as Affordablekey.It is a great website for finding best products at a great price. Right now, for Father's Day, Affordablekey is offering up to 30% discount on their products. Just use coupon code SAVE30 at the checkout page to avail this discount. So go and check out the website to find the best Windows XP product key.

What is the code to a rebatle arceus?

You cant. The item is a key item and you cant use it more than once

How many times can you use a Windows 7 product key?

Unless otherwise stated, once and once only.

This product is the key code only.?

You have purchased a product that can be activated using a key code rather than a physical copy or download link. You will need to input this key code to unlock or access the product's features or content. Be sure to keep the key code safe and secure.

How does one enter a Windows Vista product key on a laptop?

A product key will usually be found on the package of the computer or on the laptop itself. When you start The laptop with Vista windows you will automatically be asked for the key which you will need to input to proceed.

Is there any way to legally get Microsoft Word for free?

No, there is no legal way to get Microsoft Word for free. Every time you install Microsoft Word and the rest of Microsoft Office, you must enter a product key, which can only be used once and only once. Once the product key is used, it is no longer valid. This product key prevents people from simply copying the software from the computer and giving it out for free in any way. You must pay for the software at your local electronics retail store.

Where can one obtain a free download of Norton Antivirus that is not a trial version?

The only promotion that Norton is offering right now is a 6 month free trial when you use the trial product key. When you create a new account with them they will email you the information to obtain your product key. Once you have the product key you can continue setup of this software.

Can you install tropico 4 on more than one computer?

yes, it will ask for your log in that you used on the first computer, and it will then install. You will still need the disks product key