Every data file has a --- that says about the way the data is sto Records File structure
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- The file that contains ordering attributes that are not key in nature is referred to as theJava assignment Create a java program that allows a user to input customer records (ID number, first name, last name, and balance owed) and save each record to a file.java code Create a program that allows a user to input customer records (ID number, first name, last name, and balance owed) and save each record to a file.
- C# OR C++ PROGRAMMING LANGUAGE USE C# LANGUAGE TO Create a simple Record Keeping ProgramThe program shall ask the user to choose betweenAdd DataDelete DataDisplay DataEndIf Add Data, the program will ask the user to enter a key and its valueEnter Key:Enter Value:Store all data in a dictionaryIf Delete Data, the program will ask for the key and remove the item from the dictionaryDisplay the content of the dictionary once the user selects Display DataIf End, display Thank you.This is the most effective file organization method in which one must handle all data records in a file namedA movie file has the following record structure: name of the movie producer director type production cost Assume that the name of the movie is the primary key of the file. The field type refers to the type of the movie, for example, drama, sci-fi, horror, crime thriller, comedy and so forth. Input a sample set of records of your choice into the movie file.i) Implement a primary index-based ISAM file organization.ii) Implement secondary indexes on director, type and production cost.iii) How could the secondary index-based file organization in Programming Assignment 3 (ii), be used to answer a query such as “Who are the directors who have directed films of the comedy or drama type, who have incurred the highest production cost?
- Cooper College maintains a master file of students and credits earned. Each semester the master is updated with a transaction file that contains credits earned during the semester. Each file is sorted in Student ID number order. start Declarations num masterID string masterName num masterCredits num transID num transCredits string bothDone = "N" num HIGH_VALUE = 999999 InputFile master InputFile trans OutputFile newMaster getReady() while bothDone = "N" detailLoop() endwhile allDone()stop getReady() open master "studentFile.dat" open trans "semesterCredits.dat" open newMaster "updatedStudentFile.dat" readMaster() readTrans() checkBoth()return readMaster() input masterID, masterName, masterCredits from master if eof then masterID = HIGH_VALUE endifreturn readTrans() input transID, transCredits from trans if eof then transID = HIGH_VALUE endifreturn checkBoth() if masterID =…C++ Write a program that will allow a user to enter students into a database. The student information should include full name, student ID, GPA and status. The program should allow delete any student based on student ID.A movie file has the following record structure:name ofthe movie producer director type productioncostAssume that the name of the movie is the primary key of the file. Thefield type refers to the type of the movie, for example, drama, sci-fi, horror, crimethriller, comedy and so forth. Input a sample set of records of your choice into themovie file.i) Implement a primary index-based ISAM file organization.ii) Implement secondary indexes on director, type and productioncost.
- 4. Movie Store System This is a system for selling and buying DVDs and videos of movies. There will be three types of users. First the regular customers, they can access the database of DVDs and videos with different types of search. Second there is a group of users that can post DVDs or/and videos to be sold. These users have access to add movies to the database, so that regular customers can search for these movies. When the customer has finished searching for a DVD and/or a video he/she can communicate a message to the seller in order to buy the product from him. The third class of user is the administrator; this user will be in charge of administrating the database and users. The administrator will be in charge of giving and revoking selling privileges to regular customers so that they are able to add videos and DVDs in the database. Use Visual Paradigm to answer the above question with following four UML diagrams: UML Diagram to be used: USE CASE (For Documentation), Class Diagram…File Attributes 5. File attributes (a) File name: file name is a very important file attribute When a file changes name, it seems to change its identity (just like when you change your name) The oldest file naming we may remember is the 8 +3 convention in DOS (in DOS, all file names can NOT be bigger than 8 characters, special characters like spaces were not allowed etc.). So a file like C:\\Program Files\\Adobe\\Photoshop can cause problems in DOS, and it has to be represented in different ways using strange character like~ (tilde). Elaborate on your understanding of file names or file naming in different operating systems (Windows, Mac, Linux etc.). For example, some OS like NTFS may allow longer file name, allow space, and even allow non English like characters such as Chinese file names. Is there a maximum length of file names (can you have a file name of 1,000 characters long?) (b) File creation date and modification date. File can be created and modified using different ways of…#DB File import sqlite3import sysimport osfrom contextlib import closing from Objects import Player, Lineup conn = None def connect():global connif not conn:if sys.platform =="win32":DB_FILE = "player_db.sqlite"else:HOME = os.environ["HOME"]DB_FILE = HOME + "player_db.sqlite"conn = sqlite3.connect(DB_FILE)conn.row_factory = sqlite3.Row def close():if conn:conn.close() def get_players():query = '''SELECT * FROM Player;'''with closing(conn.cursor()) as c:c.execute(query)results = c.fetchall()player = Player(playerID, batOrder, first, last, position, at_bats, hits)for row in results:for player in row:lineup = Lineup.add(Player(player)) return lineup# SQL statement to select all 7 fields for all players # Use a with statement to execute the query # Create a lineup object# use a loop to populate the lineup object with player objects# return the lineup object def get_player(playerID):query = '''SELECT * FROM PlayerWHERE playerID = ?;'''with closing(conn.cursor()) as c:c.execute(query,…