SQL
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3y ago
 Structured Query Language (SQL) helps users to communicate with the database. SQL lets you access, manipulate and managing data in a relational database management system (RDBMS). SQL is domain specific language . SQL is declaration language (what should be done is only thing to be told, how to do is not required). SQL commands: 1)DDL: data definition language ,it works on structure of the table/relation. 2)DML: Data manipulation language ,once the table is created ,to store ,manage, access, delete data in the table DML is used. 3)DCL: Each and every user will have t ..read more
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Data abstraction, data independence and levels of abstraction
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3y ago
  Data Abstraction Data Abstraction refers to the process of hiding unwanted/unnecessary data from the user. for example if we are using social apps like whatsapp we can send and receive messages but we don't know how data is stored, where data is stored ,which data structure is used, all this information is not given to user. There are three levels of data abstraction and to achieve data independence we divide data abstraction in three levels. Data Independence means there should be no direct interaction between user and data.  View Level Conceptual Level Physical Level ..read more
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Introduction to programming with matlab - Vanderbilt University week-3 quiz 1 solutions
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3y ago
 Lesson 2 Wrap Up These solutions are for reference only. It is recommended that you should solve the assignment and quiz by yourself honestly then only it makes sense to complete the course. but if you cant figure out some part of it than you can refer these solutions make sure you understand the solution   dont just copy paste it ----------------------------------------- main course : https://www.coursera.org/learn/matlab ..read more
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Introduction to programming with matlab - Vanderbilt University week-9 assignment 5 solutions
codemummy
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3y ago
Echo Generator These solutions are for reference only. It is recommended that you should solve the assignment and quiz by yourself honestly then only it makes sense to complete the course. but if you cant figure out some part of it than you can refer these solutions make sure you understand the solution   dont just copy paste it ----------------------------------------- echo_gen.m function output = echo_gen(in,fs,delay,gain) samples = round(fs * delay) ; ds = floor(samples); signal = zeros(length(in) + ds, 1); signal(1:length(in)) = in; echo_signal = zeros(length(in) + ds, 1); ech ..read more
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Introduction to programming with matlab - Vanderbilt University week-9 assignment 4 solutions
codemummy
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3y ago
Saddle Points These solutions are for reference only. It is recommended that you should solve the assignment and quiz by yourself honestly then only it makes sense to complete the course. but if you cant figure out some part of it than you can refer these solutions make sure you understand the solution   dont just copy paste it ----------------------------------------- blur.m function [output] = blur(A, w) [rows, columns] = size(A); B = nan(size(A) + 2 * w); B(w + 1 : end - w, w + 1 : end - w) = A; output = 0 * A; for i = w + 1 : rows + w for j = w + 1 : columns + w tmp = B(i - w ..read more
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Introduction to programming with matlab - Vanderbilt University week-9 assignment 3 solutions
codemummy
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3y ago
Saddle Points These solutions are for reference only. It is recommended that you should solve the assignment and quiz by yourself honestly then only it makes sense to complete the course. but if you cant figure out some part of it than you can refer these solutions make sure you understand the solution   dont just copy paste it ----------------------------------------- saddle.m function indices = saddle(M) indices = zeros(0, 2); [rows, columns] = size(M); for row = 1:rows for column = 1 : columns point = M(row, column); if isGreaterThan(point, M(row, :)) && isSmallerThan(p ..read more
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Introduction to programming with matlab - Vanderbilt University week-9 assignment 2 solutions
codemummy
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3y ago
Text Files These solutions are for reference only. It is recommended that you should solve the assignment and quiz by yourself honestly then only it makes sense to complete the course. but if you cant figure out some part of it than you can refer these solutions make sure you understand the solution   dont just copy paste it ----------------------------------------- char_counter.m function charnum = char_counter(file_name, character) file = fopen(file_name, 'rt'); if file < 0 || ~ischar(character) charnum = -1; return; end charnum = 0; line = fgets(file); while ischar(line) ch ..read more
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Introduction to programming with matlab - Vanderbilt University week-9 assignment 1 solutions
codemummy
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3y ago
 Excel Files These solutions are for reference only. It is recommended that you should solve the assignment and quiz by yourself honestly then only it makes sense to complete the course. but if you cant figure out some part of it than you can refer these solutions make sure you understand the solution   dont just copy paste it ----------------------------------------- get_distance.m function distance = get_distance(x,y) persistent raw; if isempty(raw) [~, ~, raw] = xlsread('Distances.xlsx'); end state1_index = state2index(raw, x); state2_index = state2index(raw, y); if state ..read more
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Introduction to programming with matlab - Vanderbilt University week-8 assignment 2 solutions
codemummy
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3y ago
Using Cell Arrays These solutions are for reference only. It is recommended that you should solve the assignment and quiz by yourself honestly then only it makes sense to complete the course. but if you cant figure out some part of it than you can refer these solutions make sure you understand the solution   dont just copy paste it ----------------------------------------- sparse2matrix.m function matrix = sparse2matrix(sparse_matrix) dimensions = cell2mat(sparse_matrix(1)); n = dimensions(1); m = dimensions(2); default = cell2mat(sparse_matrix(2)); matrix = default * ones(n, m ..read more
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Introduction to programming with matlab - Vanderbilt University week-8 assignment 1 solutions
codemummy
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3y ago
Character Vectors These solutions are for reference only. It is recommended that you should solve the assignment and quiz by yourself honestly then only it makes sense to complete the course. but if you cant figure out some part of it than you can refer these solutions make sure you understand the solution   dont just copy paste it ----------------------------------------- caesar.m function coded = caesar(sequence, shift) sequence = double(sequence); sequence = sequence + shift; coded = char(loop(32, 126, sequence)); end function val = loop(start, stop, val) r = stop - start + 1 ..read more
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