How to Optimize iPhone, iPad and iPod Performance

1. Close Apps Running in the Background On an iOS 10/9/8 device, when you tap the home button to leave an app, you do not “close” that app. In fact, all apps continue to run in the background, and certain apps (social media, apps with “push” notifications, streaming music apps) take up a good chunk of battery when they are running. If you close them when they’re not in use, you could save more battery and RAM to make…

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What is – DML, DDL, DCL and TCL – Introduction

DML DML is abbreviation of Data Manipulation Language. It is used to retrieve, store, modify, delete, insert and update data in database. Examples: SELECT, UPDATE, INSERT statements DDL DDL is abbreviation of Data Definition Language. It is used to create and modify the structure of database objects in database. Examples: CREATE, ALTER, DROP statements DCL DCL is abbreviation of Data Control Language. It is used to create roles, permissions, and referential integrity as well it is used to control access to database…

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Find Duplicate Values with SQL Script

Let’s assume that data has been entered in a table and now you want to find if a table column have duplicated values. Here is an SQL script to join data from one table for comparison purpose. The table must have a primary key column (unique column) and the second column for comparison. Here is a sample script: Details: – DWDOCID is the primary key column – AIXFlag, is just a fixed value (optional) – SAMPLEEN is the table…

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T/SQL Splint String/Text

One common task performed in database applications is given a full name, how can this be split into the first name and last name.  In this article, three different methods are discussed to perform this task using three different functions in SQL Server.  It is assumed in this article that the full name is just made up of one first name and one last name. Using SUBSTRING Function The first method is the use of the SUBSTRING string function,…

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Tips for Effective SQL Server Database Maintenance

“ I have been asked several times for advice on how to effectively maintain a production database. Sometimes the questions come from none-DBAs who are implementing new solutions and want help fine-tuning maintenance practices to fit their new databases’ characteristics. As with the majority of tasks and procedures in the IT world, there isn’t an easy one-size-fits-all solution for effective database maintenance, but there are some key areas that nearly always need to be addressed. My top five areas of…

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