What lists are contained in a database like this? Well, to start with, there's a list of patients' names. Then there's a list of past appointments, a list with medical history for each patient, a list of contact information, and so on. This is true of all databases, from the simplest to the most complex. For instance, if you like to bake you might decide to keep a database containing the types of cookies you know how to make and the friends you give these cookies to.
This is one of the simplest databases imaginable. It contains two lists: a list of your friends, and a list of cookies. However, if you were a professional baker, you would have many more lists to keep track of: a list of customers, a list of products sold, a list of prices, a list of orders, and so on. The more lists you add, the more complex the database will be. In Access, lists are a little more complex than the ones you write on paper.
Access stores its lists of data in tables , which allow you to store even more detailed information. If you are familiar with other programs in the Microsoft Office suite, this might remind you of Excel, which allows you to organize data in a similar way.
In fact, you could build a similar table in Excel. If a database is essentially a collection of lists stored in tables and you can build tables in Excel, why do you need a real database in the first place? While Excel is great at storing and organizing numbers, Access is far stronger at handling non-numerical data , like names and descriptions.
Non-numerical data plays a significant role in almost any database, and it's important to be able to sort and analyze it. However, the thing that really sets databases apart from any other way of storing data is connectivity. A relational database is able to understand how lists and the objects within them relate to one another.
To explore this idea, let's go back to the simple database with two lists: names of your friends, and the types of cookies you know how to make. Because you're only making cookies you know the recipe for and you're only going to give them to your friends, this new list will get all of its information from the lists you made earlier.
See how the third list uses words that appeared in the first two lists? A database is capable of understanding that the Dad and Oatmeal cookies in the Batches list are the same things as the Dad and Oatmeal in the first two lists. This relationship seems obvious, and a person would understand it right away. Excel would treat all of these things as distinct and unrelated pieces of information.
In Excel, you'd have to enter every single piece of information about a person or type of cookie each time you mentioned it because that database wouldn't be relational like an Access database.
Simply put, relational databases can recognize what a human can: If the same words appear in multiple lists, they refer to the same thing. The fact that relational databases can handle information this way allows you to enter , search for , and analyze data in more than one table at a time.
Generally, a download manager enables downloading of large files or multiples files in one session. Many web browsers, such as Internet Explorer 9, include a download manager.
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Microsoft Access Runtime. Select Language:. Choose the download that you want. Download Summary:. Total Size: 0. Back Next. Microsoft recommends that you install a Download Manager.
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Download multiple files at one time Download large files quickly and reliably Suspend active downloads and resume downloads that have failed. Yes, install Microsoft Download Manager recommended No, thanks.
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