GAS AGENCY MANAGEMENT
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Introduction
About the organization
The concern “Radha Gas Agency” deals with the supply of gas for domestic and commercial purpose. It is situated of at No.134B, Siruvani Main Road, Alandurai, Coimbatore. The organization was established at 1996 and currently it has carrying out its duty with a 300 number of workers working in its esteemed campus. They service the customers based on their needs by serving to home by giving domestic delivery and to vehicles and shops for commercial purpose. The organization has established well by prompt delivery and advancement.
Project Description
The project entitled “Gas Agency” is done to make the manual process easier by making it a computerized system for billing and maintaining stock.
The Gas Agencies get the order request through phone calls or by personal from their customers and deliver the gas cylinders to their address based on their demand and previous delivery date. This process is made computerized and the customer’s name, address and stock details are stored in a database. Based on this the billing for a customer is made simple and easier, since a customer order for gas can be accepted only after completing a certain period from the previous delivery. This can be calculated and billed easily through this.
There are two types of delivery like domestic purpose use delivery and commercial purpose use delivery. The bill rate and capacity differs for both. This can be easily maintained and charged accordingly. The stock of gas and all its details are processed swiftly.
EXISTING SYSTEM:
In the existing system, the billing process, receiving order from customers and stock details are done through manual records.
Whenever a customer makes a demand for gas it is recorded in a separate notebook and the previous delivery made to the customer is searched and the number of days from that date till now is calculated. If the number of days is expired only then the order is accepted, if not the order placed will be rejected. Then the valid order request is request is taken in and a billing is done manually. The order is for two purposes as domestic and commercial. The billing is done based on the above two categories and the rate is charged.
Then the stock of cylinders is also maintained in manual records. So while billing this also has to be taken into account and billed. So this involves a great process and the time is also wasted.
PROPOSED SYSTEM:
In the proposed system, the process of billing and maintaining the stock, database of customers are all made computerized.
Since whenever a customers makes a demand or places an order through phone call or by personal, it is received and immediately checked by billing. The customer’s name, address, last date of delivery are all maintained in the database. So when the customer order is received and billed, the system automatically calculates the number of days from the previous delivery, if valid the billing can be done, if not the billing cannot be done and the customer can be informed about it. So the manual process of recording and billing is done easily without any paper work.
COMMON LANGUAGE SPECIFICATION (CLS):
Visual Basic.NET is also compliant with CLS (Common Language Specification) and supports structured exception handling. CLS is set of rules and constructs that are supported by the CLR (Common Language Runtime). CLR is the runtime environment provided by the .NET Framework; it manages the execution of the code and also makes the development process easier by providing services.
Visual Basic.NET is a CLS-compliant language. Any objects, classes, or components that created in Visual Basic.NET can be used in any other CLS-compliant language. In addition, we can use objects, classes, and components created in other CLS-compliant languages in Visual Basic.NET .The use of CLS ensures complete interoperability among applications, regardless of the languages used to create the application.
IMPLEMENTATION INHERITANCE:
Visual Basic.NET supports implementation inheritance. This means that, while creating applications in Visual Basic.NET, we can drive from another class, which is know as the base class that derived class inherits all the methods and properties of the base class. In the derived class, we can either use the existing code of the base class or override the existing code. Therefore, with help of the implementation inheritance, code can be reused.
CONSTRUCTORS AND DESTRUCTORS:
Constructors are used to initialize objects, whereas destructors are used to destroy them. In other words, destructors are used to release the resources allocated to the object. In Visual Basic.NET the sub finalize procedure is available. The sub finalize procedure is used to complete the tasks that must be performed when an object is destroyed. The sub finalize procedure is called automatically when an object is destroyed. In addition, the sub finalize procedure can be called only from the class it belongs to or from derived classes.
GARBAGE COLLECTION:
Garbage Collection is another new feature in Visual Basic.NET. The .NET Framework monitors allocated resources, such as objects and variables. In addition, the .NET Framework automatically releases memory for reuse by destroying objects that are no longer in use. In Visual Basic.NET, the garbage collector checks for the objects that are not currently in use by applications. When the garbage collector comes across an object that is marked for garbage collection, it releases the memory occupied by the object.