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Database design
Database tables will be created for you on the Technology web server. The schema will be as follows. Please note that this is a simplified database structure, designed to make it straightforward to implement the assignment on a basic level; you can modify this or add additional tables if you wish. Only the first two tables are absolutely essential to implement a bare pass solution.
sc_users table
Records users in the system, and whether they are an administrator or a regular user.
ID INT PRIMARY KEY
isadmin TINYINT
name VARCHAR(255)
username VARCHAR(255)
password VARCHAR (255)
dayofbirth INT
monthofbirth INT
yearofbirth INT
filmshowings
Records the current film showings.
film VARCHAR(255)
date VARCHAR(255)
time VARCHAR(255)
screen INT
maxtickets INT
certificate VARCHAR(5)
mybookings
A table which can be used if you wish to implement code to allow users to view, change and cancel their bookings. Not required for a bare pass answer but useful for more advanced answers.
username varchar(255)
showingID INT
ntickets INT
various techniques of hashing?
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
A super key is an attribute or set of attributes used to recognize the records uniquely in a relation. For instance, in the Relation PERSON defines earlier PERSON_ID is a super
how does Btree differ from a B+ - tree?
Update Operations and Dealing with Constraint Violations There are three basic operations to be executes on relations: Insertion Deletion Update The INSER
Normalize the following tables upto and including the 3NF. Submit a 1 page printout of only the final set of normalized tables in Data Architect. Just use Data Architect to do the
There are three main sources of utilities and applications for a DBMS: a. Vendor applications and utilities are given for working with or maintaining the database, and generally
Advantages of Data Distribution The primary benefit of distributed database systems is the ability to access and share data in a reliable and efficient manner.
Define multivalued dependency and 4NF. Ans: Multivalued Dependency - Assume R be a relation schema and let α ⊆ R and β ⊆ R. The multivalued dependency α →→β holds o
Define the term- Actors and Data Stores Actors: An actor is the active object which drives data flow graph by producing or consuming values. Actors are attached to inputs a
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