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Exercise 1: 1 TABNAME COLCOUNT ROWCOUNT . DEPT 3 3 . EMP 4 4 .
Exercise 1:Fig. 1TABNAMECOLCOUNTROWCOUNT…….……..……..……..TABLENAMECOLNAME……DEPT# ……DNAME ……BUDGET …………ENAME …………SALARY…………As explained, the Catalog is self-describing-that is, it includes entries for the Catalog relvars themselves. Extend fig. 1 to include the necessary entries for the TABLE and COLUMN relvars themselves.Exercise 2:Give example of:a.A many to many relationship in which one of the participants is a weak entityb.A many to many relationship in which one of the participants is another relationshipc.A many to many relationship that has a subtyped.A subtype that has an associated weak entity that does not apply to the supertype.
