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Created with Fabric.js 1.4.5 What Is DataBase ? What Is DataBase ? A database is a collection of information that is organized so that it can easily be accessed, managed, and updated. DATABASE DATABASE Importance of DataBase Importance of DataBase 1.Secur e 1.Secur e Database can be stored in a remote facility unaffected by devastating events and alsocan be password protected. 2.Cheap 2.Cheap Database for business can be a hefty investment initially but improving the efficiently of employees and impressing customer over the long term. 3.Type 3.Type The name list is database can sort so quickly compared to manually sorting in a paper form. 4.Report We can produce all kind of reports using databaseaccording to our needs. Challegesissues that may face during database system design and development Challeges/issues that may face during database system design and development 1.Improper Normalization 1.Improper Normalization 2.Improper Indexes 2.Improper Indexes I. Turn every data into a relationship,never turn any data in relationship.II. Normalization is relationship and how data are organized into table. I.Not using the appropriateamount of indexes.II.Not checking serve performance to seehow locking indexes affect it. 3.Hard Deletes 3.Hard Deletes I.Delete data irreversibly.II.Delete data permanently. 4.Primary Key Abuse 4.Primary Key Abuse I.Assign the primary key with data in the row.II.Using application data for primary key. Suggestion On How To Overcome ChallengesIssues Suggestion On How To Overcome Challenges/Issues 2.Hard Deletes 5.Improper Indexes I.Keep in the same table if the changes.II.Keep in other table if the change affect other rows. Data will be delete permanently. 3.Naming Standards Make sure that naming standards are easy to understand. 4.Primary Key Abuse Don't make the primarykey with the data in a row. 1.Improper Normalization Where fileds should have an index.Forgein key should have an index. References References I.Database wikipedia http://en.wikipedia.org/wiki/Database Real world example of database Real world example of database THE NATIONAL UFO REPORTING CENTER THE NATIONAL UFO REPORTING CENTER What is National UFO Reporting Center? What is National UFO Reporting Center? I.Recording Photographs,Video,Illustrarions. II.Recording all the UFO History and any thing about history. National UFO Reporting Center Data Usage National UFO Reporting Center Data Usage 2.The National UFO Reporting Center http://www.nuforc.org/ Designed to stored all the record such as photographs,video,illustrarions and all the located of UFO find out. Access Of National UFO Reporting Center Access Of National UFO Reporting Center Collect all the date and time of the UFO find out.
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