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Articles on Trending Technologies
Technical articles with clear explanations and examples
Even Number With Prime Sum
All even numbers from 4, can be expressed as a sum of two prime numbers. Sometimes a number can have more than one sum of the prime number combination.For an example the number 10 = (5 + 5) and (7 + 3)This algorithm will find all of the combinations of prime sums for a given number. When one number x is prime, then only we will check whether (number - x) is prime or not, if yes, the sum of x and (number – x) represents the even number.Input and OutputInput: Even number: 70 Output: Prime sums 70 = 3 ...
Read MoreGraham Scan Algorithm
The convex hull is the minimum closed area which can cover all given data points.Graham’s Scan algorithm will find the corner points of the convex hull. In this algorithm, at first, the lowest point is chosen. That point is the starting point of the convex hull. Remaining n-1 vertices are sorted based on the anti-clockwise direction from the start point. If two or more points are forming the same angle, then remove all points of the same angle except the farthest point from start.From the remaining points, push them into the stack. And remove items from stack one by one, ...
Read MoreDifferent database objects inside Catalog folder in SAP HANA Studio
It includes −Column ViewsEPM ModelsEMP Query SourceFunctionsIndexesProceduresSequencesSynonymsTablesTriggersViews
Read MoreTime taken by savepoint to perform backup in SAP HANA
M_SAVEPOINTS view stores Current and historical savepoint statistics. There is column DURATION which tells the total time taken by savepoint.You can extract the following information from the numbers in this view −CRITICAL_PHASE_DURATION shows the period of time during which the updaters were blocked in a savepoint. Normally, this should be in the milliseconds range, except for a global savepoint for data backup, which may take longer due to global synchronization across all nodes. If the critical phase duration is too long, there is probably some problem (e.g., I/O load is too high).DURATION shows the total time taken by a savepoint. ...
Read MorePath for file based data backups in SAP HANA
All the information is available under global.ini file which stores global configuration properties for each service in the landscape.These are the global properties most frequently used for extended storage configuration − Name Section Value Defaultbasepath_databackup persistence File path($DIR_INSTANCE)/backup/data
Read MoreBabylonian method to find the square root
The Babylonian method to find square root is based on one of the numerical method, which is based on the Newton- Raphson method for solving non-linear equations.The idea is simple, starting from an arbitrary value of x, and y as 1, we can simply get next approximation of root by finding the average of x and y. Then the y value will be updated with number / x.Input and OutputInput: A number: 65 Output: The square root of 65 is: 8.06226AlgorithmsqRoot(number)Input: The number in real.Output: Square root of given number.Begin x := number y := 1 precision ...
Read MoreFactorial of a large number
In computers, variables are stored in memory locations. But the size of the memory location is fixed, so when we try to find the factorial of some greater value like 15! or 20! the factorial value exceeds the memory range and returns wrong results.For calculation of large numbers, we have to use an array to store results. In each element of the array, is storing different digits of the result. But here we cannot multiply some number with the array directly, we have to perform manual multiplication process for all digits of the result array.Input and OutputInput: A big number: ...
Read MoreDifference between enforced and unenforced license in SAP HANA
In SAP HANA, following permanent license type is supported −Unenforced License: When you use an unenforced license key in SAP HANA and consumption of HANA system exceeds the license amount of memory, it doesn’t effect the operation of SAP HANA database.Enforced License: When an Enforced license key is installed and consumption of HANA system exceeds the license amount of memory, HANA system gets locked. If this situation occurs, HANA system has to be restarted or a new license key should be requested and installed.
Read MoreCheck if a given point lies inside a Polygon
In this problem, one polygon is given, and a point P is also given. We need to check whether the point is inside the polygon or outside the polygon.For solving it we will draw a straight line from the point P. It extends to the infinity. The line is horizontal, or it is parallel to the x-axis.From that line, we will count how many times the line intersects the sides of a polygon. When the point is inside the polygon, it will intersect the sides, an odd number of times, if P is placed on any side of the polygon, ...
Read MoreCheck Perfect Square or Not
A number is said to be a perfect square number if the square root of that number is an integer. In other words, when a square root is a whole number, then the number is called a perfect square number.We can check perfect square by finding the square root of that number and match with i again and again to get exact square root. When the square root crosses the value, it is not a perfect square number.But here to reduce effort, we have not checked the square root again and again. As we know that the square root of ...
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