<!DOCTYPE bank [
	<!ELEMENT bank (customer)+>
	<!ELEMENT customer (customer_num, social_sec_num, name, city?, state?, (account_type)+)>
	<!ELEMENT customer_num (#PCDATA)>
	<!ELEMENT social_sec_num (#PCDATA)>
	<!ELEMENT name (#PCDATA)>
	<!ELEMENT city (#PCDATA)>
	<!ELEMENT state (#PCDATA)>
	<!ELEMENT account_type (account_type_code, balance, (account_activity)*)>
	<!ELEMENT balance (#PCDATA)>
	<!ELEMENT account_type_code (#PCDATA)>
	<!ELEMENT account_activity (operation_type, operation_date, amount, dest_account?)>
	<!ELEMENT operation_type (#PCDATA)>
	<!ELEMENT operation_date (#PCDATA)>
	<!ELEMENT amount (#PCDATA)>
	<!ELEMENT dest_account (#PCDATA)>
]>

<bank>
<customer>
	<customer_num>1</customer_num>
	<social_sec_num>2223334444</social_sec_num>
	<name>Joe</name>
	<city>New Orleans</city>
	<account_type>
		<account_type_code>C</account_type_code>
		<balance>100</balance>
		<account_activity>
			<operation_type>D</operation_type>
			<operation_date>10:12, 03/23/08 	
				</operation_date> 
			<amount>99</amount>
			<dest_account>S</dest_account>
		</account_activity>
	</account_type>
	<account_type>
		<account_type_code>S</account_type_code>
		<balance>1</balance>
	</account_type>
</customer>
<customer>
	<customer_num>2</customer_num>
	<social_sec_num>1223334444</social_sec_num>
	<name>Joe1</name>
	<city>San Francisco</city>
	<state>CA</state>
	<account_type>
		<account_type_code>C</account_type_code>
		<balance>1</balance>
	</account_type>
</customer>
</bank>

