The description of source of data and sample
The researcher have a survey will be used in this proposed study where in 25 2nd year BSIT Students From Interface Computer College in Davao City, Because they have their own knowledge about the effects of Social Networking Sites on their academic performance. Procedure on Data Gathering
We gather our data first, by conducting a survey. Second, we research on the internet. The Instruments
The researchers have the most appropriate research instruments is questionnaires which conducting the survey of this topic, in the use of the computer that can get knowledge, printed the inter topic and to finish the layout of this record.
Examples of query criteria
When you want to limit the results of a query based on the values in a field, you use query criteria. A query criterion is an expression that Access compares to query field values to determine whether to include the record that contains each value. For example, = “Chicago” is an expression that Access can compare to values in a text field in a query. If the value for that field in a given record is “Chicago”, Access includes the record in the query results. This topic lists several examples of query criteria. It assumes that you are familiar with designing simple select queries. To learn more about creating select queries, see the article Select data by using a query. In this topic
Introduction to query criteria
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Criteria for Text, Memo, and Hyperlink fields
Criteria for Number, Currency, and AutoNumber fields
Criteria for Date/Time fields
Criteria for other fields
Introduction to query criteria
A criterion is similar to a formula — it is a string that may consist of field references, operators, and constants. Query criteria are also referred to as expressions in Microsoft Office Access 2007. The following tables shows some sample criteria and explains how they work. CRITERIA
DESCRIPTION
>25 and 30
This criterion applies to a Date/Time field, such as BirthDate. Only records where the number of years between a person’s birthdate and today’s date is greater than 30 are included in the query result. Is Null
This criterion can be applied to any type of field to show records where the field value is null. As you can see, criteria can look very different from each other, depending on the data type of the field to which they apply and your specific requirements. Some criteria are simple, and use basic operators and constants. Others are complex, and use functions, special operators, and include field references. This topic lists several commonly used criteria by data type. If the examples given in this topic do not address your specific needs, you might need to write your own criteria. To do that, you must first familiarize yourself with the full list of functions, operators, special characters, and the syntax for expressions referring to fields and literals.
For more information, see the articles listed in the See also section. Here, you will see where and how you add the criteria. To add a criteria to a query, you must open the query inDesign view. You then identify the fields for which you want to specify criteria. If the field is not already in the design grid, you add it by either dragging it from the query design window to the field grid, or by double-clicking the field (Double-clicking the field automatically adds it to the next empty column in the field grid.).
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Finally, you type the criteria in the Criteria row Criteria that you specify for different fields in the Criteria row are combined by using the AND operator. In other words, the criteria specified in the City and BirthDate fields are interpreted like this: City = “Chicago” AND BirthDate
