integrated structure.
ex) video, music, text message of social media, medical record etc.
Velocity
The time required to distribution and application after data generation shorten from several hours~ weeks to minutes, seconds.
ex) The news of Bin Laden's death retwitted 5000 per a minute
Now the world is in "Big Data" environment which is explosively increasing data.
Because of Big
integration of the existing transaction-orientated banking system without further extensive conversions.
These requirements had to be met by a product and division-orientated IT environment. The core applications of the existing IT environment are transaction-orientated banking systems in which customer accounts and contracts can be managed. These systems isolated the various customer-specific
● Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artificially created and controlled for
Introduction (What is plasma?)
1. Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artif
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