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Consider the subsequent relations
RENTER(rno, fname, lname, address, tel_no, pref_type, max_rent) VIEWING(rno, pno, date, comment) PROPERTY_FOR_RENT( pno, street, area ,city, pcode, type, rooms, rent) Express the subsequent queries in relational algebra. (i) List the name and comments of all renters who have viewed a property. (ii) Identify all renters who have viewed all properties along with three rooms.
Ans: (i) Π fname,lname,comment(RENTER VIEWING) (ii) Π fname,lname ( σ rooms =3 (PROPERTY_FOR_RENT) RENTER VIEWING)
Describe the nested-loop join and block-nested loop join. Ans: The block nested- loop join algorithm is as described below: for every block B r of relation R do beg
how the string works as keyword?
Assignment #1 Data Management The questions on this exam are based on the Baxter Aviation case scenario. 1. (5 points) The systems analyst proposes the following two relationshi
Explain the term High level DML? High level DML A high-level or non-procedural DML permit the user to specify what data is needed without specifying how it is to be acquired.
what benefit can a company gain by managing its own infrasture and services
Modular growth: In distributed environments, it is simple to expand. Latest sites can be added to the network without affecting the operations of other sites, as they are somewhat
Explain the cartesian product in Database Management System
What is a database graph? The partial ordering implies that the set D may now be viewed as a directed acyclic graph, known as a database graph.
Project Description: I want to build a card playing Website. The user should be able to 1. Login. 2. Have profile access. 3. Put money into the site. 4. Selects t
Determine the Advanced modeling concepts You have to follow some steps for object-oriented design. These steps for OO Design methodology are as follow: 1) Produce objec
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