Relational data is " flat " - that is , organized in the form of a two - dimensional array of rows and columns 關(guān)系數(shù)據(jù)是“平面的” ,即它是以具有行與列的二維數(shù)組的形式組織的。
For example , you can access the first element of the second row of the two - dimensional array by specifying indexes 例如,指定索引( 1 , 0 )可以訪問二維數(shù)組第二行的第一個元素。
Up until now , we haven t dealt with two - dimensional arrays ; however , as you can see below , the syntax is quite simple 目前,我們還沒有處理過二維數(shù)組;但是,在下面可以看到,語法非常簡單。
Create matrix array builds a two - dimensional array that contains two columns and three rows , and then displays it in a list box 創(chuàng)建矩陣數(shù)組生成一個包含兩列和三行的二維數(shù)組,然后在列表框中顯示。
The following code shows a call in which a two - dimensional array is passed to a procedure that expects a one - dimensional array 下面的代碼演示一個調(diào)用,其中,二維數(shù)組被傳遞到需要一維數(shù)組的過程中。