00:01
Okay, so the three architectures here that emerged for integrated databases are going to be, one, the internal level, two, the conceptual level, and three, the external level.
00:13
So first, the advantages of the internal level.
00:17
So an advantage here is that the internal level has an internal schema, which describes the physical storage structure of the database.
00:26
Also, the internal schema is also known as a physical system.
00:30
Schema and it uses the physical data model and it is used to define that how the data will be stored in a block and the physical level is also used to describe the complex low level data structures in detail so some advantages of the conceptual level would be that the conceptual schema describes the design of a database at the conceptual level and the conceptual level is also known as a logical level so the conceptual level the conceptual schema describes the structure of the whole database.
01:05
And the conceptual level describes what data is to be stored in the database and also describes what relationship exists among this data.
01:15
And in the conceptual level, the internal details such as an implementation of the data structure are hidden.
01:23
And programmers and database administrators are going to work at this level, so at the conceptual level.
01:30
And then we have the advantages of the external level...