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Create table employee and enter employee data in SQL?
Consider the following relational schemas: EMPLOYEE (EMPLOYEE_NAME, STREET, CITY) WORKS (EMPLOYEE_NAME, COMPANYNAME, SALARY) COMPANY (COMPANY_NAME, CITY) Specify the table definitions in SQL.
Ans. CREATE TABLE EMPLOYEE( EMPLOYEE_NAME VARCHAR2(20) PRIMARY KEY,STREET VARCHAR2(20),CITY VARCHAR2(15));CREATE TABLE COMPANY( COMPANY_NAME VARCHAR2(50) PRIMARY KEY,CITY VARCHAR2(15));CREATE TABLE WORKS( EMPLOYEE_NAME VARCHAR2(20)REFERENCES EMPLOYEE(EMPLOYEE_NAME,COMPANYNAME VARCHAR2(50)REFERENCES COMPANY(COMPANY_NAME,SALARY NUMBER(6),CONSTRAINT WORKS_PK PRIMARY KEY(EMPLOYEE_NAME, COMPANY_NAME));
Which is the properties of entities? Attributes is the properties of entities.
Define shadow paging. An alternative to log-based crash recovery method is shadow paging. This technique requires fewer disk accesses than do the log-based methods.
How can one distinguish among different kinds of parameters? Input parameters are used to pass data to subroutines. Output parameters are used to pass data from subrout
My cut off date is very soon in a Database subject and i dont know how to solve anything in it
In Oracle what is system global area and how is it organized? The SGA is a collection of shared memory fields which along with the Oracle processes constitute an Oracle instan
deffine class&object
Why is database redesign necessary? Database redesign is essential for two reasons. First, redesign is essential both to fix mistakes made during the initial database design. S
Explain Data Sublangauges ? Data sublanguage: In relational database theory, the term sublanguage, first used for this purpose through E. F. Codd in the year of 1970, refers t
what is file organization? what are file organization techniques.explain in detail? explain random file organization technique, multikey file organization technique?what is indexin
Question: Consider the following database relations for a textbook ordering system used by a college bookshop: Book (b-copy#, bname, ISBN#, author, price, subject) Order (s#
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