Database Normalization - 5200 Words

D a t a b a s e N o r m a l i z a t i o n I n t r o d u c t i o n N o r m a l i z a t i o n i s c a r r i e d o u t i n d a t a b a s e s t o r e d u c e r e d u n d a n c i e s a n d d e p e n d e n c i e s . T h i s i s p o s s i b l e v i a t h e s p l i t t i n g o f l a r g e t a b l e s i n t o s m a l l e r o n e s t o i s o l a t e d a t a s o t h a t a d d i t i o n s , d e l e t i o n s , a n d m o d i f i c a t i o n s o f a f i e l d c a n b e m a d e i n j u s t o n e t a b l e a n d t h e n p r o p a g a t e d t h r o u g h t h e r e s t o f t h e d a t a b a s e v i a t h e d e f i n e d r e l a t i o n s h i p s ( C o d d , 1 9 7 0 ) . I n t h e n o r m a l i z a t i o n t h e r e a r e f a c t o r s c o n s i d e r e d d u r i n g n o r m a l i z a t i o n t h e s e b e i n g ; F i r s t N o r m a l F o r m ( 1 N F ) , S e c o n d N o r m a l F o r m ( 2 N F ) , a n d T h i r d N o r m a l F o r m ( 3 N F ) . H o w e v e r , f o r t h e t a b l e t o b e f u l l y n o r m a l i z e d , i t i s s u p p o s e d t o f a l l i n t h e 3 N F c a t e g o r y ; f r e e o f i n s e r t i o n , u p d a t e , a n d d e l e t i o n a n o m a l i e s . T a b l e N o r m a l i z a t i o n T h e t a b l e s c r e a t e d i n t h eShow MoreRelatedNormalization Process Within A Database955 Words   |  4 PagesNormalization can be used as a methodology for achieving an organized and logically designed database free of overused excessive data. The normalization process includes three integral fundamental steps which are the first normal form, second normal form, and third normal form. Logically organizing data in a manner that reduces or eradicates excessive equivalent data allows for accurate and concise data tracking within a database, and normalization can help achieve this. Normalization as a MethodologyRead MoreDatabase Normalization and Logical Process Concept Paper1403 Words   |  6 PagesDatabase Normalization and Logical Process Concept paper This short paper will explain with a simple example the process and the need of normalization in the most of the business databases. Complete proposal break down (Timeline phases, Financial phases) will be submitted per management request. Overview At first any database should be designed with the end user in mind. Logical database design, also referred to as the logical model, is the process of arranging data into logical, organized groupsRead MoreDatabase Normalization Is Important For The Future. Company Performance Information806 Words   |  4 Pagesstandards or metrics. With importance of data, it would benefit business employees preserve information by improving the database design that stores it all. While information is being stored sufficiently as is, database design can be processed through normalization to improve its organization. Purpose As a commonly exercised technique for the analysis of relational databases, normalization creates set of relational tables and minimize data redundancy that preserve consistency (Bahmani et al, 2010). TheRead MoreDatabase Analysis : A Database989 Words   |  4 PagesA database is defined as an organized collection of data, typically in electronic form. A properly designed database provides access to accurate well organized information. This is essential to achieve the goals that where outlined when the database was first planned. Certain principles are required when designing a good database. One principle that is very important is the elimination of duplicate data, also known as redundant data, which not only waste space but adds confusion. According to theRead MoreApplying Normalized Tables And The Model Of The Entity Relationship Diagram Can Then Improve The Conceptual Model1206 Words   |  5 Pagesthe tables are even added to the actual design. Normalization appropriates the affiliation amongst all of the attributes within the entity table to achieve its goal. Since the Entity Relationship Diagram will also contain the appropriations amongst the attributes, as a common base to identify the entity type structure, than it is possible to then apply the normalization principles, all during the conceptual data modeling phase. Enacting Normalization during the Entity Relationship Diagram can thenRead MoreA Database For A Relational System865 Words   |  4 Pages Database Normalization Srikanth Karra Instructor: Dr. Steven Case Southern New Hampshire University When we design a database for a relational system, the main objective in the development of a logical data model is to create an accurate representation of the data its relationship and constraints. The data should be split in different tables, which can then be joined together based on their relations with each other and the data found in each one of them. These tables should thereforeRead MoreThe Training Session With Other It Staff, The Chief Information Officer ( Cio ) Essay1369 Words   |  6 Pagesof normalizing databases included. The summary will include the steps needed to convert a database into First Normal Form, Second Normal Form, and Third Normal Form. An example will be used to show the reasons for converting the college database into these forms. Another example will include a time when denormalize of a table is acceptable in a database. The business rules of the college will impact the database normalization and a decision to denormalize the tables. When databases are created, dataRead MoreCis 109 Assignment 31077 Words   |  5 PagesLogical Design The purpose of normalization is to create a stable set of relations is representative of the operations of an enterprise. By doing this we are able to reduce redundancy to save space and avoid inconsistencies in data. It also ensures that the design is free of certain updates, insertions, and deletion anomalies (Ricardo, 2012). With normalization as with most anything else there are advantages and disadvantages. The advantages of normalization are: ACID, which stands for atomicityRead MoreNormalization Is A Process Of A Composite Primary Key For All Tables1006 Words   |  5 PagesNormalization is a process in the database design process which is done to ensure that the right data is in the right table. It helps to overcome the update problems. There are various forms of normalization namely 1NF, 2NF, 3NF, 4NF and 5NF. Another type of normalization is BCNF. 1NF ensures that there are no multi-valued attributes in any table. 2NF is used to eliminate any partial dependencies and ensure that all non-key columns depend on the entire primary key. I have used an auto-incrementalRead MoreHuffman Trucking Database Essay752 Words   |  4 PagesHuffman Trucking Database The driving log was broken up into 11 tables. The database is in the third normal form or Boyce Codd Normal Form (BCNF) (Pratt Adamski, 2005, p. 153). This level of normalization ensures no repeating groups, no key column is dependent on only a portion of the primary key, and the only determinants that are contained are candidate keys. The company has four locations in the United States and services 925 drivers. Normalization to the third normal form is sufficient