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See Web Browser.

A database is a collection of information stored on a computer. The database is made up of records – each product record might include a name, a price, a description and a picture. Databases are structured – they contain the same sorts of information for a collection of similar items. Databases are an essential element of most computer systems, including large websites, e-shops, etc.

Griffith’s Valuation:
Between the years 1848 and 1864 a valuation of property was undertaken in Ireland. A tax levy for the support of the poor would be based on this valuation. The results of the survey lists, among other things, every householder and landholder in Ireland at this time. The Commissioner of Valuation was Richard Griffith
( 20 July 2004).

A link, or hyperlink, is a part of a web page that, if clicked with a mouse, opens a different web page. Links are usually shown in blue and underlined on a webpage.

To register means to create an identity online. For many services, it is important that the website knows your name, address, phone number, etc. For example, if buying a book in an online bookshop, you need to provide this information. The online bookshop then records your details in a database of customers, which it later uses to post out the book to you. Registration is usually completed by filling in an online form, with fields for name, address and other information.

Secure site:
When you enter information into a form on a web-site and submit it to the web server, the information may be sent as plain text. If this data is intercepted it can be easily read. In the case of confidential information, such as a credit card, this is not sufficient. In the case of a secure site, the information entered into the form is encrypted before being sent to the web server. Secure websites begin with ‘https’ rather than ‘http’. They also have a padlock on the right of the status bar.

A tax paid to the Church of Ireland. It was fiercely resented by non-members of the Church of Ireland
( ).

Tithe Applotment Books:
An Act of 1823 decreed that the tithe would no longer be payable in kind but must be paid in money. This required a valuation of land that was done between the years 1823 and 1838 when the tithe was abolished. It was done on a civil parish by civil parish basis. The result is the Tithe Applotment Books. It lists landholders living in Ireland between these years

The Uniform Resource Locator, or address of a web page. Like the phone number of a particular person, this is unique and goes direct to the web page with which it is associated.

Web browser:
A computer program, running on the human user’s PC, which gets information from web servers and displays it on the screen. These instructions are usually in the computer language HTML.

A website is a collection of web pages which displays information on a particular topic. Common types of websites include company websites (information about the company), online shops (where you buy goods and services and pay by credit card) and personal websites (where individuals share their interests). A website may consist of just one page of information, but will usually contain several pages, all linked together. All the pages in a website usually share the same ‘domain’ name. For example, all the pages in the large online shop Amazon have an address (URL) that starts with ‘’.
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