A keyword, in the context of search engine optimization, is a particular word or phrase that describes the contents of a Web page. Keywords are intended to act as shortcuts that sum up an entire page. Keywords form part of a Web page’s metadata and help search engines match a page to with an appropriate search query.
In general, an attribute is a characteristic. In a database management system (DBMS), an attribute refers to a database component, such a table. It also may refer to a database field. Attributes describe the instances in the row of a database.
Think of a table in a relational database as being analogous to a spreadsheet. An attribute is simply one non-null cell in the spreadsheet, or the conjunction of a column and row. It stores only one piece of data about the object represented by the table in which the attribute belongs. For example, the attributes in an invoice might be price, number, date or paid/unpaid, etc.
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