Problem in Active Real-Time Database application
The active database and real-time databases have increased in recent time. The real-time databases system is an important part of the technologies now a days for supporting the real-time computing (RTC), applications such as automatic tracking and object positioning application. Computer integrated manufacturing (CIM) process to control air-traffic. Multimedia server for real-time streaming-commerce-business and credit card transactions. In real-time database application the data changes very rapid and is dynamic. On the other hand the real-time database application have great potential. This paper will address on the issues associated in active of real-time database and we will discuss different alternative to resolving these issues. Real-time database is a very new area in which small research has been done. On the other hand the active real-time application has a good potential. In this paper we will focused on the issues and the question such as sematic, assignment of time constraints and rule selection. Which we have to consider when we are designing or implementing real-time database. And I will highlight the issues associated with event detection, rule triggering, rule selection and evaluating in an active real-time database system.
Index terms: - hard real-time, soft real-time, transactions, performance, concurrency control, real-time, active network application Database systems, Flow control, Design Issue, replicated database systems update, query processing
Introduction
The real-time database system cope their data in active application dependent on the design. Now a day the real-time database application become so complex and require access to more data. Therefore ...
... middle of paper ...
...ontrol mechanism would be eliminated. High-priority transaction is issued when it is running low-priority transaction is already executing it is possible to confirm timeliness. Serialization consistency is the main requirement of the concurrency transaction. Result of the read and write operations will be same while transaction executed in serial order. There is no requirement on the actual order, as long it ensure some ordering ref [3]
A Model for Data and Transactions
Transaction processing in active real-time database system for ecommerce might require different data models and due to security reasons most of the real-time database scheduling algorithms in real-time application they are using the algorithms to reduces the workload and operating environment model. Where this model used in the ecommerce database application where it require security requirements.
problem and it will be used in this case to build the databases. The databases
According to the given task, it is expected to create the database for the management of the company. Such organization as dentist clinic has chosen for development. In order to collect information, many sources with such kinds of clinics were investigated and used for this purpose. The main ones are http://www.medtorgrf.ru and http://www.mosdental.ru, in which necessary medicines, instruments and main procedures were revealed for the implementation of dental activity. Besides, it is necessary to identify the types of systems to which the designed database belongs. As a result of the research, the transaction processing system (TPS) is the most suitable for the implemented functions of the data bank for the following reasons. The first is the relation of this system to the operational level. Laudon and Laudon (2006) indicate that the systems of this level allows helping the managers to monitor the activity of the company and business operations associated with earnings, sales, paysheet and material flows in the plant while other systems of such levels as management and strategic focus on controlling, reporting and prognosis of sales for future, considering environmental factors. The second reason is the operation’s principle of TPS is similar to the developed database. Chaffey et al., (2003) confirm that the system saves the day-to-day bargains during the conducting of the business, and pay for products and services is provided as an example of such a system. The last reason is the necessity of TPS for manages to track the condition of inner operations and interaction of the company with exterior environment. Authors add that the TPS is “the major producer of information for the other types of systems” (p. 44).
One more important factor is to satisfy the business agility requirement which is an important factor in supporting analytical processing. In today’s business environment which is fast paced decisions required to be made faster and this is very important and plays a key role for the business success. For example in a fraud detection application the real time action is required. The ability to make decisions in real time to be more precise in few seconds or minutes rather than hours or days can be very important both financially as well as competitively although this is not true in case of all companies.
The non-commercial website Lego.com has been an enormous success providing Lego with a strong presence on the Internet. However, implementing a website capable of handling sales transactions requires a great deal more than a non-commercial site. The firm has implemented an ERP system which may provide some technical support for the website. The details of the ERP system are unknown at this time; however, the goal of implementing the system was to optimize the supply chain from production to distribution, which will be a significant opportunity for the E-Commerce project. Another important consideration is incorporating the ERP system into the E-Commerce transactions so that separate systems and processes are not necessary.
Oracle's relational databases represent a new and exciting database technology and philosophy on campus. As the Oracle development projects continue to impact on University applications, more and more users will realize the power and capabilities of relational database technology.
There are customer tools and transaction processing, network applications and database so that transaction of data is reliable and secure.
Data warehousing is a difficult system and has to have the capability deliver quality data. An operational database is one which is used by organizations to run its day to day database activities. They are designed to handle rapid transaction processes with systematically updates. Velocity is important to operational databases. They are most commonly operated by office staff, and are on the order of megabytes of data to gigabytes. Database consistency checks and constraints are rigidly enforced. They contain the latest technology necessary to operate organizational functions.
[7] Elmasri & Navathe. Fundamentals of database systems, 4th edition. Addison-Wesley, Redwood City, CA. 2004.
“There is some support for the propositions that (1) Transaction processing systems should be able to be managed within each work group in an organisation, managed that is with respect to work stations in use and functionality available on those workstations. (2) exhibit very little model behaviour. (3) support a high degree of operator independence or asynchornity. ” REFERNCE: http://www.csse.monash.edu.au/~cavram/papers/tp/tr94-02h.html There are 9 types of transaction processing models 1: Batch systems: 2: Monitor systems : 3: Time sharing systems 4: Advanced virtual terminal front end systems 5: Client server systems 6: Electronic mail and forms 7: Database based groupware 8: (IVR) systems 9: (EDI) systems “Transaction processing systems are information systems which collect data and distribute operational data both within and between organisations. The wide spread use of networks and personal computers (used as terminals) has provided feasible new options for the design of transaction processing systems
System performance is one of the most critical issues faced by companies dealing with vast amounts of data. Companies use database systems and their applications to store, retrieve and handle this data.
Moreover, E-commerce has widely recognized nowadays among people. Therefore such data should be secure in databases and privacy of data should be maintained.
E-commerce application is a platform where there is buying and selling of products and services which are done by businesses and consumers via an electronic medium, mostly without using any paper documents. “E-Commerce applications support transactions between businesses and their customers. They provide 24/7 customer support, allowing customers to order products, check orders and track shipping, review previous orders, reorder products, and manage their accounts.” (Auburn SeeWolf llc , 2009-2012)
Another function of the DBMS is the concurrency control services. Database Management System must ensure that the database is updated correctly because the database can be used by many multiple users. The DMS enable many user to access the data concurrently. The database managements system will help from ay data loss. It have the features which that can support the updates like batch processing, locking, two-phase locking and the time stamping.
E- Commerce is a phenomena that is emerging rapidly between businesses all over the world, and it has affected the businesses at all sizes in many aspects.
In our world, people rely heavily on the power of technology every day. Kids are learning how to operate an iPad before they can even say their first word. School assignments have become virtual, making it possible to do anywhere in the world. We can receive information from across the world in less than a second with the touch of a button. Technology is a big part of our lives, and without it life just becomes a lot harder. Just like our phones have such an importance to us in our daily lives, database management systems are the same for businesses. Without this important software, it would be almost impossible for companies to complete simple daily tasks with such ease.