This function does the reverse of save_friendsdb -- it takes a single argument, filename, and opens that specified file reading. Then it reads the file one line at a time and cřeates a new friends database to return. Like in the previous function, each line will contain a friend's name followed by a tab, then the friend's height, and then a newline. Sample calls should look like this: >> load_friendsdb("friendsdb.tsv")

This function does the reverse of save_friendsdb -- it takes a single argument, filename, and opens that specified file reading. Then it reads the file one line at a time and cřeates a new friends database to return. Like in the previous function, each line will contain a friend's name followed by a tab, then the friend's height, and then a newline. Sample calls should look like this: >> load_friendsdb("friendsdb.tsv")

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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close all; clear all; clc; current_script = mfilename('fullpath'); script_directory = fileparts(current_script);file_name0 = 'data_00.csv'; file_name1 = 'data_01.csv'; file_name2 = 'data_02.csv'; file_name3 = 'data_03.csv'; data0 = csvread([script_directory '\' file_name0]); data1 = csvread([script_directory '\' file_name1]); data2 = csvread([script_directory '\' file_name2]); data3 = csvread([script_directory '\' file_name3]); avg_data = (data1 + data2 + data3) / 3; figure; % plot (data0(:,1), data0(:,2), 'b-', 'LineWidth', 2, 'DisplayName', 'Parabolic Curve');hold on; % plot(avg_data(:, 1), avg_data(:, 2), 'k-', 'Linewidth', 1, 'DisplayName', 'Average Data Points'); plot(smooth_data(:, 1), smooth_data(:, 2), 'k-', 'Linewidth', 1, 'DisplayName', 'Smoothed Data'); scatter(data1(:,1), data1(:,2), 5, 'r', 'filled', 'DisplayName', 'Sample Data Points 1'); scatter(data2(:,1), data2(:,2), 5, 'g', 'filled', 'DisplayName', 'Sample Data Points 2'); scatter(data3(:,1), data3(:,2), 5, 'y',…
Topic: Server Side Development How do you tell the server that session variables are being used? You do not have to add any special code. The server handles session variables automatically. Include the code: $_SESSION['sessionVarName'] = $varName; exchanging varName with the name of the variables for your program. Include the code: session_start(); as the first line in each function that uses a session variable. Include the code: session_start(); at the very top of the Web page.
Filename: runlength_decoder.py Starter code for data: hw4data.py Download hw4data.py Download hw4data.pyYou must provide a function named decode() that takes a list of RLE-encoded values as its single parameter, and returns a list containing the decoded values with the “runs” expanded. If we were to use Python annotations, the function signature would look similar to this:def decode(data : list) -> list: Run-length encoding (RLE) is a simple, “lossless” compression scheme in which “runs” of data. The same value in consecutive data elements are stored as a single occurrence of the data value, and a count of occurrences for the run. For example, using Python lists, the initial list: [‘P’,‘P’,‘P’,‘P’,‘P’,‘Y’,‘Y’,‘Y’,‘P’,‘G’,‘G’] would be encoded as: ['P', 5, 'Y', 3, ‘P’, 1, ‘G’, 2] So, instead of using 11 “units” of space (if we consider the space for a character/int 1 unit), we only use 8 “units”. In this small example, we don’t achieve much of a savings (and indeed the…
You are creating a database for storing information for a Netflix like service. The database stores movies with id, title, filename and TV shows with id, title. TV Shows have episodes. Each episode has a corresponding TV show, a season id, an episode id, title, filename. Some episodes have a next episode (i.e. the episode that will automatically start showing once the user finishes watching the current episode!). The database also stores users, each user has an id, username, password. Users may watch zero or more movies, zero or more TV show episodes. For each movie or episode, the database stores a watch time value for each user, indicating how many minutes the user watched that movie or show. Finally, the database stores which movie appears similar to which other movie for a given user (to be able to make recommendations). Construct an E-R diagram (based on a Chen's model) to represent the above requirements. Make sure you include all appropriate entities, relationships, attributes,…
Write a stored procedure named displayCountryMessage(). The displayCountryMessage () should receive one input argument for the country name and then based on that input argument, display a short message and the name of the country. Otherwise, if the country does not exist in the country table, then the procedure should display an appropriate message. For example, if I call the displayCountryMessage() procedure and pass it “France”, then it will display the message “France exists in the Country table”. If I call the displayCountryMessage()procedure and pas it “AAAAA”, then it will display the message “AAAAA does NOT exist in the Country table”.
Javascript Create a function named "getUser". This function needs to accept a "userID" parameter. Use Fetch with Async/Await to request the data for the requested user. The function should return JSON data.
10. Write another function called db_consistent that takes a dictionary of dictionariesin the format described in the previous question and returns Trueif and only if every one of the inner dictionaries has exactly the same keys.(This function would return False for the previous example, since RosalindFranklin's entry doesn't contain the 'author' key.)
The symbol table stores the memory address associated with each variable. What is the memory address of the start_time variable in main()? You only need to fill in the last 2 digits of the address. 0x7ffd949d30__ What symbol was added after the data type of MoveSchedule's start_time and end_time parameters? Place a check (✓) beside your answer. int * & start_time What is the memory address of the start_time variable in MoveSchedule()? You only need to fill in the last 2 digits of the address. 0x7ffd949d30__ What happens to the value of the start_time variable in main() when the start_time variable in MoveSchedule is updated? Place a check (✓) beside your answer. start_time in main remains the same start_time in main gets the value assigned to start_time in MoveSchedule start_time in main changes to 0.
The databse system has a database called online shop. What is a result of a CREATE statement that tries to create OnlineShop a second time? A)The statement replaces OnlineShop with a new OnlineShop database. B)The statement produces an error that the database already exists. C) The statement creates a copy of the database OnlineShop as onlineShop_1 D) The statment is ignored.
When you create a case in EnCase you add your information either by a template or enter it individually for each case. Where is this header information contained? It is stored in the header in the first evidence file since it does not have to be written to again It is stored in each data block before the CRC for the next file It is stored in the last section of the evidence file right before the MD5 hash It is stored in the header in each of the subsequent evidence files added to the evidence file