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Oracle Interview Questions And Answers
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Pop_list Text_list Combo box 103. What is pop list? The pop list style list item appears initially as a single field (similar to a text item field). When the operator selects the list icon, a list of available choices appears. 104. What is a text list? The text list style list item appears as a rectangular box which displays the fixed number of values. When the text list contains values that can not be displayed, a vertical scroll bar appears, allowing the operator to view and select undisplayed values. 105. What is a combo box? A combo box style list item combines the features found in list and text item. Unlike the pop list or the text list style list items, the combo box style list item will both display fixed values and accept one operator entered value. 106. What are display items? Display items are similar to text items with the exception that display items only store and display fetched or assigned values.Display items are generaly used as boilerplate or conditional text. 107. What is difference between open_form and call_form? when one form invokes another form by executing open_form the first form remains displayed,and operators can navigate between the forms as desired. when one form invokes another form by executing call_form,the called form is modal with respect to the calling form.That is, any windows that belong to the calling form are disabled, and operators cannot navigate to them until they first exit the called form. 108. What is new_form built-in? When one form invokes another form by executing new_form oracle form exits the first form and releases its memory before loading the new form calling new form completely replace the first with the second. If there are changes pending in the first form,the operator will be prompted to save them before the new form is loaded. 109. What is a library? A library is a collection of subprograms including user named procedures, functions and packages. 110. What is the advantage of the library? |