Another method you can use to determine how much water you should drink each day is by dividing your weight in pounds by two, according to the Public Broadcasting System. The resulting number is the amount of water in ounces you should drink each day. If you weigh 150 pounds, you should consume at least 75 ounces of water per day. This is a little over nine cups of water daily.
Availability, in the context of a computer system, refers to the ability of a user to access information or resources in a specified location and in the correct format.
Access is simply being able to get to what you need. Data access is being able to get to (usually having permission to use) particular data on a computer. Web access means having a connection to the World Wide Web through an access provider or an online service provider such as America Online.