Subscription

Data Structures
class	IndividualSubscription
class	IndividualSubscriptionDAO
class	IndividualSubscriptionForm
class	InstitutionalSubscription
class	InstitutionalSubscriptionDAO
class	InstitutionalSubscriptionForm
class	PaymentTypesForm
class	Subscription
class	SubscriptionDAO
class	SubscriptionForm
class	Subscriptiontyoe
class	SubscriptionTypeDAO
class	UserIndividualSubscriptionForm
class	UserInstitutionalSubscriptionForm

Detailed Description

Implement subscriptions, subscription management, and subscription checking.