How to design a Card Access System for A User Database

 Timothy Munene
  Feb 18, 2018

Designing a database for a card based access system is not complicated once you have down to pat the logic. You must have a system that focuses on the organization and easy accessibility. The basic concerns at all times should be Security, storage, and usability. The process gets daunting if you do not take into consideration the requirement for a stable and fast process between the user recognition and verification. If you do not have a good database that works efficiently, it is hard to force the system to run with the user access speeds. You have to ensure that routing of signals complies with the best PCB practices and the information organization is efficient. Having a Card Access System is akin to organizing an untidy kitchen by putting everything in duly labeled drawers for easier access. This ensures a good outcome for the user database system.

1.Consider Size

The size of a user database varies accordingly. The larger it is, the harder the system needs to work overtime to access the users’ information. This also ensures your database lives up to its intended expectations, but you must consider the following:

  • Identity

Putting aside enough space for user identifying is necessary for efficient data management. The most important factor in user database is obviously the user. To store each identity, you must build a bunch of datasets for each token user. With a sample in hand, you can go ahead and design the database, working around the parameters of each user. This makes sure that you don’t overload pages or slow down the whole system.

  • Search, sort and verify

The ultimate purpose of a search and sort system is speed maximization. There is nothing users hate than spending longer than just a few minutes when swiping their cards for access. To maximize speed, you must have a procedure of making tokens, having them sorted to their proper pages and have a systemic order that allows the system to find them. Using the kitchen example, it is very frustrating looking for one item amidst hundreds of others, which consumes time. If you sort and label the drawers, it is very easy to go straight to the particular drawer and retrieve your item. This saves you a lot of time and energy.

  • Storage

You need to choose the best memory storage chip for your user card. This enables proper and efficient identification retrieval by the retrieval by the card access systems. Depending on which card you choose, this affects the process speed and the dependability of the signals.

2. Pagination and Memory Map

A security access system has users verified depending on their card identifying the number or a PIN (Personal Identification Number) also known as a token. The verification needs more than just verifying the token. The parameters are verified before access and may be such as access levels; access time allowed and blacklist coding. Further definition of the token demands that you design user groups by the function they perform, such as access time allowed, user access level or the user’s records. After every record then comes the determination of each byte size.

3. Mark the algorithm for searching and sorting

For a quick search and comparison of a token with the database, the records storage and categorization must appear in an organized and definitive method. In a real application, the database, in the beginning, is empty and only populates during new user registration. The requirement is for very user record to appear in the set memory page, following the token ID information. After insertion of a new record, sort the page in order for the records to appear in an ascension method. Binary search algorithm remains the best method for record verification in a database. In this method, divide the records into two and do a comparison of token IDs on both halves. Binary Search Algorithm cuts the verification time by more than half.

4. Memory Chip selection

Memory chips in database designing are vital for making sure they meet capacity and there exists minimal intermission exists between writing and record storage. Serial flash has good capacities to store information and to suit different storage requirements. In the past, a flash with a large capacity needed a parallel bus connection to function properly. The current flash has more or less the same high storage capacity but provides defined memory for your different needs.

How to design a Card Access System for A User Database

Timothy Munene

Timothy Munene is a writer based in Kenya who has authored many web articles and blogs in popular online niches. When not writing material for clients all around the world, Timothy manages his blog ajirakenya.co.ke, where he helps other people develop freelancing skills.

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