/// <summary>
/// ���캯����
/// </summary>
/// <param name="fieldName">�ֶ�����</param>
/// <param name="usage">�ֶ����͡�</param>
/// <param name="defaultValue">ȱʡֵ��</param>
/// <param name="description">�ֶ�������</param>
public DbFieldAttribute(string fieldName, DbFieldUsage usage, object defaultValue, string description)
{
this.fieldName = fieldName;
this.usage = usage;
this.defaultValue = defaultValue;
this.description = description;
}
/// <summary>
/// ���캯����
/// </summary>
/// <param name="fieldName">�ֶ�����</param>
/// <param name="usage">�ֶ����͡�</param>
public DbFieldAttribute(string fieldName, DbFieldUsage usage)
{
this.fieldName = fieldName;
this.usage = usage;
}
/// <summary>
/// ���캯����
/// </summary>
/// <param name="fieldName">�ֶ�����</param>
/// <param name="usage">�ֶ����͡�</param>
/// <param name="description">�ֶ�������</param>
public DbFieldAttribute(string fieldName, DbFieldUsage usage, string description)
: this(fieldName, usage, null, description)
{
}
