Question: 01)NEED THEORETICAL ANSWER 02)NEED THEORETICAL ANSWER (25) Answer the following questions: i) Why must the meta data be established for a database? ii) What is

01)NEED THEORETICAL ANSWER

01)NEED THEORETICAL ANSWER 02)NEED THEORETICAL ANSWER (25) Answer the following questions: i)

02)NEED THEORETICAL ANSWER

(25) Answer the following questions: i) Why must the meta data be established for a database? ii) What is the meaning of each attribute in the relation schema shown below? RELATION_INDEXES REL_NAME INDEX_NAME MEMBER_ATTR INDEX_TYPE ATTR_NO ASC_DESC Use an example to explain your answer. 4. (5) Given the following relation schema and assume that a primary index has been established on DNUMBER, how to evaluate ODNUMBER>5(DEPARTMENT) in an efficient way? Describe your method. DEPARTMENT DNUMBER DNAME

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