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Define the terms 1) physical schema 2) logical schema.
Physical schema: The physical schema explains the database design at the physical level, which is the lowest level of abstraction describing how the data are actually stored.
Logical schema: The logical schema explains the database design at the logical level, which explains what data are keeps in the database and what relationship exists between the data.
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
State your technical objectives for mining the data. Data Understanding. Describe the data For each attribute, give its description and data type. For numeric attributes
how to write a in a text and load it on mysql
DDL Compiler The DDL compiler changes the data definition statements (such as CREATE TABLE .... in SQL) into a set of tables having metadata tables. These tables have infor
a set of possible data value of an attribute is called??
System level permissions : With the use of data dictionary you can view them. Let us take the table name as user_sys_privs (used in oracle). DESCRIBE USER_SYS_PRI
What is Information System?
Explain the disadvantages of file oriented approach? In the oriented approach Applications are designed in isolation. Design of application is optimized for one application. In
What are the aggregate objects in the data dictionary? Views Match codes Lock objects.
What is meant by data-transfer rate? The data-transfer rate is the rate at which data can be retrieved from or kept to the disk.
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