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Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined):
Ans: The relational database schema for the following ER diagram is like this:
A (a1, b1, a2, a3)
B (b1, b2, b3, b4)
C (c1, c2)
D (b1, c1, r21)
a method named WonGame that checks each letter in the word is matched by its label
Consider the relations EMP(ENO,ENAME,AGE,BASIC_SALARY) WORK_IN(ENO,DNO) DEPT(DNO,DNAME,CITY) Express the following queries in SQL (i) Find names of employees who work in a dep
1. Staff (staffID --> availabilityID) 2. Services (servicesID --> itemBasedID --> timedBasedID) 3. TimedBased (timedbasedID--> priceid) 4. Clients (clientId, serviceId-->
Package classes and associations into models Programs are made of separate physical units which could be edited, imported, complied or otherwise manipulated. The careful part
what is primary key
The advantages of a database management system (DBMS) include :- Data integrity and elimination of duplication.
What is relationship instance ? Relationship Instance - A relationship is a relation between two or more entities. An instance of relationship set is a set of relationships.
What sorts of tables one can se in designing the hierarchy of a LDB? Tables, which are having Foreign Key relations.
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
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