The Query Screen contains a series of data entry boxes each containing:

1. a Boolean or logical operator drop-down menu and or not . Options are AND, OR, NOT to link entries. The meanings of Boolean values are listed below. Change Boolean operators by clicking the arrow at the right of menu.

2. a Category field drop-down menu, i.e. all fields title author corp. author keyword location Categories are for example title, author, keyword or all fields. Change name field by clicking the arrow at the right of menu.

3. a data Input field. Enter information relevant to each field.

Beneath the data entry boxes are radio buttons allowing you to select presentation formats, for example:

4. a Number of Records per page drop-down menu. Select a number by clicking the arrow at the right of menu.

Submit a search with the button or clear all fields with the button.

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The search method is based on the CDS/ISIS query language. The basic rules are as follows.

1. If you select the category 'all fields', a search is executed for the input value entry

on all indexed categories.

2. If you select a single category, a search is executed on the input value for only that

category. For example, to find documents written by the author James P Grant, enter:

3. If the input field is empty, the entire entry box is ignored.

4. You can make more complex searches using several entry boxes connected by Boolean

operators. For example:

5. Term within a single input field can be connected using special characters which are also

Boolean operators. These characers are:

* = AND (both terms must be present)

+ = OR (either one or the other or both)

^ = NOT (term must be absent)

(G) = both terms must be present in the same category

(F) = both terms must be present in the same occurence of a category

. = Approximity operator

So the previous example could also be entered:

6. For the long categories such as Title which are indexed in word by word, we must enter the operators (*, +, ^,...) to combine the words, for example:

is equivalent to: health AND developing AND country

while

searches for the phrase, "environmental health", if it is indexed by phrase.

7. The dollar sign is used as a wild card which allows you to search a leading sequecne of

characters. This,

keyword urban$

will select such terms as urban, urbanisation ...