How does SAP ERP differ from a normal ERP system?

Good question, First of all, there isn't (as far as I know) something called normal ERP. It is a concept that can be achieved by many available solutions basically driven by the need of the orgnization and its future plans and cost limitations. But what makes SAP deferent than other ERP solution in the market is that they have industry based solutions and Best Practices packages that makes it on a higher level of integation compared to competitors, also they have other solutions that cater for specialized needs complementing those ERP operations. SAP ERP is not always the answer for any industry or company, the decision to go SAP need to be calculated carefully weighing the cost of the maintenance, scaling up and change management (which if an orgnization is not intending to go through and follow best practices and standard solution then will inflate the cost drastically). In my opinion, which might be biased here since I come from an SAP background, SAP is the most mature, integrated and complete ERP solution in the market these days. (For certain industries)

Enterprise resource planning (ERP) is a type of business management software suite of integrated applications. ... Whereas SAP SE (System analyses Programe; Systems, Applications & Products in Data Processing) akaSAP is a German multinational software corporation that makes enterprise software.

It is simply the fact that SAP solutions are scalable and can be customized according to the evolving business requirements of an enterprise. It can be easily integrated with future applications giving users a significant competitive advantage in the market

The difference between OpenERP v/s SAP is Open source v/s ProprietaryThat means OpenERP is available free of cost and can be implemented without any hassles - OpenERP consist of variety of modules that can be used for different organizations for eg - there is education module available for institutes, service management for service industries and so on . . . .SAP  - SAP is not available freely which means you need to pay huge amount for implementation again here there is licensing fee as per the number of user increase 

Enterprise resource planning (ERP) is a type of business management software suite of integrated applications. It is used by organizations to collect, store, manage and interpret business data from various functions viz. Finance, Purchasing, Manufacturing, Sales, Logistics etc.

ERP software facilitates information flow between all business functions and provides insight into key performance indicators (KPIs) of all business activities in real time.

Whereas SAP SE (Systemanalyse und Programmentwicklung; Systems, Applications & Products in Data Processing) aka SAP is a German multinational software corporation that makes enterprise software. SAP also has ERP suites called SAP ECC and SAP Business One.

Firstly, there is nothing such as 'Normal ERP'. ERP is a generic term used to address software that provides core business functions (Finance, HR, Logistics etc.). It is more of marketing term that may mean different set of core applications from vendor to vendor. SAP's ERP product is differentiated by its maturity (as a software) and immense install base and high level of stability. 

ERP stands for Enterprise Resource Planning.  It is a business process management tool which deals with the basic internal processes of a company by using various modules and sap is used  for streamlines processes across procurement, manufacturing, service, sales, finance, and human resource

SAP ERP is useful tools for SPARE Management, Material Planning, machine maintenance, Track records with history, Production planning & most important for the quality management system. However all the company purchase one or other form of ERP as part of quality management/Supply chain management/Transportation/HR but SAP is costly.

SAP is an universal Enterprise resource planning system software.its big advantage is that includes Inventory,Banking,Production,Human resource,logistics.Hence a company with all departments can easily run the business with the help of this software

ERP is the basic version of SAP. at the same time, we cant under estimate the ERP system.

Here are some facts why SAP ERP differ from other ERP system:

* Market Leader

SAP serves in countries, industries, languages, country offices,+ service partner,0+ Customers (World Wide)

     Market Shares :

                ERP Vendor        Enterprise                  SME

                SAP                    .1%                    .1 %

                Oracle                .1%                      .9%

                Microsoft              5.1%                        7.3%

                IMB                    3.0%                        6.3%

* Innovation

Leverages in-memory, cloud, and mobile technologies in a way that builds on  existing application platform, helping

To minimize disruption for to customers.

Unique approach ensures consistency across all on-premise, on-demand, and on-device applications,designing and orchestrating them to fit together as “networked solutions.”

* Industry Expert:

Multi-industry support on a single platform

Deep industry-specific capabilities

Embedded, preconfigured best practices

Industry-driven development and co-innovation

Clear industry road maps

* Analytics

Worldwide Leader (#1 in real-time functionality)

Market Shares (SAP.4%, Oracle%, IBM%)

Customer worldwide,+, Partner+

* Mobility

Market leader in mobile solution

Device Management (Recognized revenue leader in mobile device management         enterprise)

Messaging (1.5 billion SMS and MMS messages processed daily,4.5 billion subscribers, mobile carriers)

Customers (, Enterprise mobility customers)

Market Shares (% share of Fortune enterprise mobility customers)

* Real Time

SAP High Performance Analytic Appliance (SAP HANA)

Experience the real-time Enterprise in action

Runsx faster

* Support

Best support services in the industry

x7 Service Level Agreements

Fixed-Price Commitment

End-to-End Support