1. PK, FK, ER모델이란?
-Primary Key: 테이블에서 각 Row를 유일하게 구분하는 Column-Key.
-Foreign Key: 하나의 테이블에 있는 Column으로는 그 의미를 표현할 수 없는 경우, 다른 테이블의 Primary-Key Column의 값을 반드시 참조하여 표현해야 하는 Column.
-Field: Table에서 Row와 Column이 교차하는 데이터.
2. 참조 무결성이
orientated IT architecture requirement was met with the implementtation of SAP® CRM for a standard customer care and SAP® NetWeaverTM as a systems integration platform. syskoplan designed and implemented major parts of the overall architecture.
Based on SAP® CRM interaction center syskoplan implemented a solution which included:
Standard view of customer and contract data
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system into a bottom-up structure.
There are three main systems in SAJO. They are controlling the business of the employees, evaluation through a complementary facility, and the process of executing the budget.
SAJO guarantees a retirement age of 55, and gives out bonuses at the end of the year based on their performances. Also, it offers several welfare systems by providing scholarship for th
on mobile devices such as cell phones, PDAs, MP3 players, notebook and tablet PCs. All participants can build social network and knowledge web base by using mobile devices.
2. Strength and Weakness of IT Infrastructure
2.1. Web 2.0
Web 2.0 is a new paradigm in web system. It briefly indicates user-centered internet environment, which is anybody who uses the internet can produce and share the d
on mobile devices such as cell phones, PDAs, MP3 players, notebook and tablet PCs. All participants can build social network and knowledge web base by using mobile devices.
2. Strength and Weakness of IT Infrastructure
2.1. Web 2.0
Web 2.0 is a new paradigm in web system. It briefly indicates user-centered internet environment, which is anybody who uses the internet can produce and share the d