Using database theories in scientific applications

مقدم أطروحة جامعية

Jayusi, Salim Ahmad

مشرف أطروحة جامعية

Shibli, Hasan A.
Matar, Samir

الجامعة

جامعة بيرزيت

الكلية

كلية الهندسة و التكنولوجيا

القسم الأكاديمي

دائرة علم الحاسوب

دولة الجامعة

فلسطين (الضفة الغربية)

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2007

الملخص الإنجليزي

Traditional methods used for describing scientific methods such as manuals must be replaced.

Those old methods consume a lot of time in designing and analyzing.

Any machine was bought to home, office or company should be supported by electronic catalog, this catalog depends on database management.

So technician and engineer refer to this programmable catalog to find errors or develop the system.

Scientific systems described by data, so database models must be used to manage those data.

Actually using data management theories and methods make it easy to understand the system, detect its errors, develop it and trace it.

Each database method can serve managing scientific systems in a different matter, so each one has its advantages and disadvantages.

Using data models for scientific applications give the following benefits : 1- Make it easy to understand models.

2- When manipulating these models by computers, make it easy to answer requests and get results quickly.

3- Gives accurate answers for user queries.

Hierarchal data model draws the systems exactly, make it easy in detecting system errors.

And ease the system improvements.

It may take a time in system design especially in big systems.

It also limits some relations between system functional units and parts.

Entity Relationship (ER) Data Model seems to be the most suitable model.

ER model can represent entities and the relationship between them completely.

All functional links can be represented in ER model.

ER model allows recursive links.

Relational model suffers because it can't represent relationships obviously.

Relational model disallow recursive links.

Network Model represents entities and relationships.

Many too many relationships can't be represented directly in Network Models.

Recursive links disallowed in this model.

التخصصات الرئيسية

تكنولوجيا المعلومات وعلم الحاسوب

الموضوعات

• الإدارة
• قواعد البيانات

عدد الصفحات

133

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-303394