Why are ADHD medications prescribed for children? ADHD medications are prescribed to improve attention and reduce hyperactivity and impulsivity in children. They may also be used to improve ability to focus, work and learn. In addition, they may be used to reduce aggression, provide a calming effect and improve coping with frustration.
There are two type of access method random access and sequential access. To go from point A to point Z in a sequential-access system, you must pass through all intervening points. In a random-access system, you can jump directly to point Z.Disks are random access media, whereas tapes are sequential access media.
Using Access Functions. One of the most powerful features of Microsoft Access queries is their support for Access functions. This is most useful in Update queries, but can also be used in Select queries. The Advanced: Access Functions query is an example of this feature.