vb 连接 oracle数据库基础

VB code:

Private Sub Form_Load()
Dim cn As ADODB.Connection
Dim rs As ADODB.Recordset
Set cn = New ADODB.Connection
cn.Open "Provider=OraOLEDB.Oracle.1;Persist Security Info=True;User Id=aaa;Password=aaa;Data Source=TEST;"
strQuery = "select * from aaa"
Set rs = New ADODB.Recordset
rs.Open strQuery, cn, adOpenStatic, adLockOptimistic
Set DataGrid1.DataSource = rs
End Sub



我使用上面的vb代码连接的oracle数据库，哪位能帮忙详细解释一下每一句的含义

---

cn.Open "Provider=OraOLEDB.Oracle.1;Persist Security Info=True;User Id=aaa;Password=aaa;Data    Source=TEST;"
**************
打开数据库连接

---

rs.Open strQuery, cn, adOpenStatic, adLockOptimistic
***************************************************
得到记录集

---

那些就是基本的连接数据库和数据绑定的代码啊