WEEKLY REFLECTION 2

Today we continue our of RDMS of chapter 2 . it is about steps in working EER and there are 8  steps

• Identify entity types
• Identify relationship types
• Determine cardinality constraints
• identify and associate attributes
• Determine candidate and primary key
• Specialize/generalize entity types
• Categorize entity types
• Draw the EER diagram

We also learn about relational data model, it is the same as in DADD but only in design, we also learn about characteristics of relation which has 6 characteristic and about key functional dependencies and the formula is A --> B

Today also move to chapter3 about Database Development Process. on components of information system we learn about components of information systems which has 5 components.

• People
• procedure
• Software
• Hardware
• Data

There are 5 Process in SDLC

• Preliminary study
• System analysis
• System design
• System Implementation
• Maintainance

There are 2 methodologies in SDLC

• Spiral Development Methodologies (Spiral)
• Rapid application Development Methodologies (RAD)

DBLC is ssimilar to SDLC

• Database initial study
• Database design
• Implementation and loading
• Testing and evaluation
• Operation
• maintainance and evolution

Important in Database Development is skill. there are 2 skill needed which is

• soft skill
• hard skill

There are 2 tools of Database Development

• font_end (upper_CASE)
• back_end (lower_CASE)