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Linking tables in Oracle

I have a root table called ROOT which consists of 20 rows for example a,b,...z.Each row of ROOT table will lead to a table whose name is same as the row of ROOT to which it is linked i.e.20 rows will lead to 20 tables.the searching of second table content will only be possible by traversing through ROOT........how it is done in ORACLE.........

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While I'm not saying it's not possible, it's not something Oracle (Or any relational database) is designed to support, so don't be surprised if this isn't possible or extremely difficult.

Relational databases support predictable relationships. IE: Table 1 relates to Table 2 in a given way.

Relational databases do not support varied relationships depending on the data in each row. The query engines simply can not join data this way.

If you provide me more details about your data, I might be able to propose a table structure that doesn't require a different table for each row of data in ROOT.

Posted on Feb 12, 2009

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How to calculate a square root on HP12C


Use the square-root function. It's the g-shifted function of the y^x key, leftmost on the second row. For example, to calculate the square root of two, press 2 g square-root

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Tip

Deleting Rows & Columns from the table


You can also remove columns or rows from the table. Once a row or column is deleted, it can be undeleted by using Undo command. You can delete the columns or rows or cells by using one of the following ways.
By Table Menu
To delete a row or column by Table menu, follow these steps.
  • Place the insertion point in the column or row that is to be deleted.
  • Click Table menu and then select "Delete" from Table menu, a submenu of Delete is displayed.
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By Popup Menu
To delete a row or column by popup menu, follow these steps.
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  • Right click the mouse, a popup menu is displayed.
  • Select "Delete Columns" command, the selected columns will be deleted.
OR
  • Place the insertion point in the column or row that is to be deleted.
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  • Select "Delete Cells" command, "Delete Cells" dialog box is appeared.
  • Select "Delete entire row" to delete a row or select "Delete entire column" to delete a column etc. from the dialog box and click "Ok" button.

on Jan 29, 2010 | Computers & Internet

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Need to make my table display in rows instead of column.


David, what you're looking for is pivot table functionality. Unfortunately, that is not a built-in feature for MySQL (it is for SQL Server 2005/2008).
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1 Answer

Keystroke sequence


Press 6 . 0 0 5 g square-root

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Use the cube-root function, which is the shifted function of the square-root key (third row, second column). For example, to find the cube root of 8, press
SHIFT [cube-root] 8 =

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1 Answer

Can I use the HP 12c to figure out square roots of numbers


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How do i do radicals expressions on a TI 30XA


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1 Answer

Plz tell me Sir/Madam. what is Hlookup And give me example


Hi Geetad11

This is Horizontal lookup , used to look up value in a 2 dimensional table .It searches for a value in the top row of a table or an array of values, and then returns a value in the same column from a row you specify in the table or array. Use HLOOKUP when your comparison values are located in a row across the top of a table of data, and you want to look down a specified number of rows. The H in HLOOKUP stands for "Horizontal."


Formulae Syntax

HLOOKUP(lookup_value,table_array,row_index_num,range_lookup)


Lookup_value is the value to be found in the first row of the table. Lookup_value can be a value, a reference, or a text string.

Table_array is a table of information in which data is looked up. Use a reference to a range or a range name.

  • The values in the first row of table_array can be text, numbers, or logical values.

  • If range_lookup is TRUE, the values in the first row of table_array must be placed in ascending order: ...-2, -1, 0, 1, 2,... , A-Z, FALSE, TRUE; otherwise, HLOOKUP may not give the correct value. If range_lookup is FALSE, table_array does not need to be sorted.

  • Uppercase and lowercase text are equivalent.

  • You can put values in ascending order, left to right, by selecting the values and then clicking Sort on the Data menu. Click Options, click Sort left to right, and then click OK. Under Sort by, click the row in the list, and then click Ascending.

Row_index_num is the row number in table_array from which the matching value will be returned. A row_index_num of 1 returns the first row value in table_array, a row_index_num of 2 returns the second row value in table_array, and so on. If row_index_num is less than 1, HLOOKUP returns the #VALUE! error value; if row_index_num is greater than the number of rows on table_array, HLOOKUP returns the #REF! error value.

Range_lookup is a logical value that specifies whether you want HLOOKUP to find an exact match or an approximate match. If TRUE or omitted, an approximate match is returned. In other words, if an exact match is not found, the next largest value that is less than lookup_value is returned. If FALSE, HLOOKUP will find an exact match. If one is not found, the error value #N/A is returned.

Remarks

  • If HLOOKUP can't find lookup_value, and range_lookup is TRUE, it uses the largest value that is less than lookup_value.
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Example
The example may be easier to understand if you copy it to a blank worksheet.ramsoft.jpg

Oct 06, 2010 | Microsoft Excel for PC

1 Answer

Flex Grid


The most common multidimensional array, the two dimensional array table, is best presented to your users in row and column format. The grid control offers a convenient way for you to display table data to your users. The users can navigate the table's values using scrollbars. Therefore, the grid control does not have to be as large as the table, because the grid control automatically displays scrollbars.
To add the flex grid control to your toolbox, select project and components. Add the flex grid control:
lesson97-1.jpg Once it is added, you will see the yellow flex grid control in your toolbox:
lesson97-2.jpg When you place the grid control on your form, you will have to resize it before the control takes on a tabular appearance. As you expand the size of the control, it does not look to much like a table. The problem is that the table's default number of rows and columns are two. To fix this problem, you must configure the rows and columns in the properties window:
lesson97-3.jpg lesson97-4.jpg lesson97-5.jpg The grid control supports fixed rows and columns. These refer to rows and columns in a grid control that do not scroll when the user clicks the scrollbars. The fixed rows and columns provides labels that describe the data. The fixed rows and columns are often called row and column headers.
lesson97-6.jpg When working with the grid control, much code is needed to provide the grid with functionality. Call statements are used to break the code required by the grid control into smaller, more manageable procedures. This is referred to as modular programming (which refers to the practice of placing code with a single purpose in a general subroutine procedure and then calling the code from a second procedure.)
Here is the code for the form load procedure (this example is based on the computer disk example used in the last lesson)


Private Sub Form_Load()
Call SizeCells
Call CenterCells



grdGrid.Row = 0
grdGrid.Col = 1
grdGrid.Text = "Single Sided; Low Density "
grdGrid.Col = 2
grdGrid.Text = "Double Sided; Low Density"
grdGrid.Col = 3
grdGrid.Text = "Singled Sided; High Density"
grdGrid.Col = 4
grdGrid.Text = "Double Sided; High Density"

grdGrid.Row = 1
grdGrid.Col = 0
grdGrid.Text = "3 1/2 inch"
grdGrid.Col = 1
grdGrid.Text = "$2.30"
grdGrid.Col = 2
grdGrid.Text = "$2.75"
grdGrid.Col = 3
grdGrid.Text = "$3.20"
grdGrid.Col = 4
grdGrid.Text = "$3.50"



grdGrid.Row = 2
grdGrid.Col = 0
grdGrid.Text = "5 1/4 inch"
grdGrid.Col = 1
grdGrid.Text = "$1.75"
grdGrid.Col = 2
grdGrid.Text = "$2.10"
grdGrid.Col = 3
grdGrid.Text = "$2.60"
grdGrid.Col = 4
grdGrid.Text = "$2.95"

End Sub
Notice how the form load procedure is used to populate the cells in the grid control. To control cell size and cell alignment, two smaller procedures are created and each procedure is called by the form load procedure.


Private Sub SizeCells()
Dim intColumn As Integer

grdGrid.ColWidth(0) = 1100

For intColumn = 1 To 4
grdGrid.ColWidth(intColumn) = 2200
Next intColumn

End Sub

Private Sub CenterCells()
Dim intColumn As Integer

For intColumn = 1 To 4
grdGrid.ColAlignment(intColumn) = flexAlignCenterCenter
Next intColumn

End Sub

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Here is the final result:
lesson97-7.jpg

Mar 26, 2008 | Computers & Internet

1 Answer

Access Pasting Multiple data in the table


When pasting data between tables, you have to make certain to select the exact number of rows and columns that you are going to paste into. For example, if you are pasting ten rows and ten columns of data, select (highlight in) from source table, Control C to copy, then go to destination table, select (highlight) ten rows and ten columns, then paste, either by right click and paste, or Control V.

This should solve your issue, but if not please post back. Thanks for rating FixYa!

Oct 03, 2007 | Microsoft Office Standard for PC

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