All types of fields are established in Access. Identity Auto Number Type Char Character MEMO Remarks
About DBGRID Modify Field Code Method. DBGRID1.COLUMNS [0] .title.caption: = 'dddddd'; About xor algorithm. XOR is a different or bit operation. When two corresponding binary bits are the same, it is 0, such as 01000 xor 10011 = 00100
FormatDateTime ('YYYY - MM Moon -DD Day-DDDD-HH: NN: SS', NOW);
PageControl display
Var i: integer; beginfor i: = 0 to pageControl1.pagecount - 1 dopageControl1.pages [i] .tabvisible: = (i = 0);
