Therefore, it is important that every single record in a database has something to uniquely identify it and this is called the 'Primary Key' or sometimes the 'Key Field'. When you started school, you were given a 'student ID' or an 'office number' (primary key).
Ignoring any maintenance costs, asphalt is generally much cheaper to install than concrete. On average, the cost per square foot for asphalt will run between $2.50 to $4.00. Fluctuations in crude oil prices can cause fluctuations in asphalt prices but the price will remain around this range. Concrete, on the other hand, can run between $4.00 to $6.00 per square foot for basic installation and can cost more depending on different finishes and detail. Itâs not unheard of to have a stained concrete driveway with a smooth finish cost over $15.00 per square foot.
on average getting concrete floors can cost anywhere from as little as $ 2 to as much as $ 17 per square foot an economical option which can just change the tone of the concrete floor will typically cost less than $ 6an elaborate finish which can come in many various designs and application techniques can cost upwards of $ 10 per square foothe cost of concrete floors will depend on the style that you choose for your home the size of the room and the professional contractor performing the job