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Let us see who the major supports of MySQL are −Oracle Corporation and/or its affiliates own all copyrights of the MySQL server and the MySQL manual. There are many people, organizations, students, and others who have helped in the development, maintenance, and improvement of MySQL. Many companies have helped in the development of the MySQL server. This includes paying for developing a new feature or providing hardware for development of the MySQL server. They have been listed below −VA Linux / Andover.netThey helped with the funding of the replicationNuSphereThey helped with the editing of the MySQL manual.Stork Design studioIt was ... Read More
Let us understand how MySQL deals with constraints −MySQL helps us work with transactional tables (which permit rollback) and with non-transactional tables (which don’t permit rollback). This is the reason why handling constraints is different in MySQL in comparison to other DBMS. In non-transactional database, if an error occurs while inserting or updating many rows, it can’t be rolled back. This case has to be handled in the right manner.MySQL Server produces an error for queries which it detects to be errors, when parsing a statement that needs to be executed. Once the error has been detected, it tries to ... Read More
Let us understand the differences between MySQL and Standard SQL. MySQL performs many operations differently in certain cases −PrivilegesThere are many differences between MySQL and standard SQL with respect to privileges given to the user. In MySQL, privileges for a table are automatically not revoked when a table is deleted. A REVOKE statement needs to be explicitly issued to revoke privileges for a table.Foreign Key ConstraintsThe MySQL implementation of foreign key constraints is different from the SQL standard. If there are many rows in the parent table with the same referenced key value, InnoDB engine does a foreign key check ... Read More
MySQL server supports extensions which may not be found in other SQL databases. This means, if these extensions of MySQL are used, the code can’t be ported to other SQL servers. But sometimes, it can be ported.Let us understand the MySQL extensions to standard SQL −Enclosing StringsThe strings can be enclosed in “ (double quotes) or ‘ (single quote) by default. If the ‘ANSI_QUOTES’ SQL mode is on, the strings have to be enclosed using ‘, and if “ (double quotes) is used, the server interprets this as identifiers.Escape Character\ is the escape character for strings.Accessing TableMySQL doesn’t support tablespaces, ... Read More
The standards compliance tells how MySQL is related to the ANSI/ISO SQL standards. There are many versions of the SQL standard, and the phrase ‘SQL standard’ is used to refer to the current version of SQL standard at any point in time.Following are the MySQL Standards Compliance −MySQL server was originally designed to work with medium-sized databases (10 to 100 million rows or 100 MB per table) on small systems. But currently, it has been upgraded to work with terabyte-sized databases.MySQL supports ODBC levels ranging from 0 to 3.5.1.MySQL also supports high-availability database clustering, which can be achieved with the ... Read More
ProblemHow to display and calculate the sum of n numbers by using dynamic memory allocation function in C language?SolutionFollowing is the C program to display the elements and calculate the sum of n numbers by the user by using dynamic memory allocation functions. Here, we also try to reduce the wastage of memory.Example Live Demo#include #include void main(){ //Declaring variables and pointers, sum// int numofe, i, sum=0; int *p; //Reading number of elements from user// printf("Enter the number of elements : "); scanf("%d", &numofe); //Calling malloc() function// p=(int *)malloc(numofe*sizeof(int)); /*Printing O/p - ... Read More
Else − if the ladder is the most general way of writing a multi-way decision.The syntax for else if the ladder is as follows −if (condition1) stmt1; else if (condition2) stmt2; - - - - - - - - - - else if (condition n) stmtn; else stmt x;FlowchartRefer the flowchart given below −ExampleFollowing is the C program to execute Else If Ladder conditional statement − Live Demo#include void main (){ int a, b, c, d; printf("Enter the values of a, b, c, d: "); scanf("%d%d%d%d", ... Read More
ProblemWhat is the simple program to show the left, right shifts, and complement of a number by using C language?SolutionLeft ShiftIf the value of a variable is left-shifted one time, then its value gets doubled.For example, a = 10, then a1 = 5ExampleFollowing is the C program for the shift operations − Live Demo#include main (){ int a=9; printf("Rightshift of a = %d",a>>1);//4// printf("Leftshift of a = %d",a2);//2// printf("Leftshift by 2 of a = %d",a
The logic we use to implement to delete the vowels from the given string is as follows −for(i=0; i
ProblemHow to find the cube root of any given number by using the C programming language?SolutionAlgorithmStep 1: Enter any number at run time Step 2: Read from console Step 3: Compute result Result:pow(number, 1.0/3.0) Step 4: Increment result Step 5: Print resultExampleFollowing is the C program to find the cube root of any given number −//finding cube root of given number// #include #include #include void main(){ int number, result; printf("Enter any number: "); scanf("%d", &number); result=pow(number, 1.0/3.0); result++; printf("\Cube of %d is: %d", number, result); getch(); }OutputWhen the above ... Read More