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Database planning

Database planning

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Database planning

  1. 1. › Show all members’ first names › Show how much Dave Young donated › Show when Sarah Jones signed up to volunteer › Show the contact info for everyone from Massachusetts › List the user_id of everyone who donated to the general fund users volunteersdonations campaigns
  2. 2. Sr. No. Name Basic DA HRA Total 1. Mayan k 10,000 2500 100 12600 2. Hiten 12,000 2000 200 14200 3. Ram 15,000 4000 100 19100 2 Salary Table Name (File) Field (Data item) Record Data End User Data Meta Data
  3. 3. Muhammad Umair Oracle Database 11g Developer Track
  4. 4. What are some situations that require planning? What happens if you don’t plan?
  5. 5. Database planning is carried out before the rest of the development cycle, to obtain an idea of the extent and scope of the project and the resource requirements. Typical issues addressed are: How large will the database be? What areas of the organization? How many analysts will it require? What are the HW/SW needs?
  6. 6. – Management activities – that allow stages of – database system development lifecycle (SDLC) – to be realized as efficiently – and effectively as possible.
  7. 7. › Mission statement for the database project defines major aims of database system. › Those driving database project normally define the mission statement.
  8. 8. › Mission statement helps clarify purpose of the database project and provides clearer path towards the efficient and effective creation of required database system.
  9. 9. › Once mission statement is defined, mission objectives are defined. › Each objective should identify a particular task that the database must support.
  10. 10. › Should also include additional information that specifies the work to be done, the resources with which to do it, and the money to pay for it all.
  11. 11. › Describes scope and boundaries of database system, including its major user views. › Describes how database system will interface with other parts of the organization’s information system.
  12. 12. – A centralized database (sometimes abbreviated CDB) is a database that is – located, stored, and maintained – in a single location. › This location is most often a central computer or database system, for example a desktop or server CPU, or a mainframe computer.
  13. 13. – A distributed database is a database – in which storage devices – are not all attached – to a common processing unit – such as the CPU, controlled by a distributed database management system (together sometimes called a distributed database system).

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