It is a procedural extension language (PL) for the structured query language (SQL) and the Oracle relational database. It provides a built-in, interpreted and OS independent programming environment.Apart from Oracle it also available Times Ten in-memory database and IBM DB2.The Syntax of PL/SQL is based on ADA and Pascal programming languages. PL/SQL ... Read More

PL/SQL is oracle’s procedural language extension to SQL. PL/SQL allows you to mix SQL statements with procedural statements like IF statements. Looping structure etc, PL/SQL is the superset of SQL. It uses SQL for data retrieval and manipulation and uses its own statement for data processing.Pl/SQL program units are generally ... Read More

If any transaction that performs a dirty read operation from an uncommitted transaction and also its committed operation becomes delayed till the uncommitted transaction is either committed or rollback such type of schedules is called as Recoverable Schedules.Types of recoverable schedulesThere are three types of recoverable schedules which are explained ... Read More

Let us understand the concept of barcode and Quick Response (QR) code.Bar CodeA bar code reader decodes the data contained in the barcode and sends it to the computer. It produces a beam of light or a laser beam to read barcodes which is reflected by the bar code image. ... Read More

Let us understand the concept of Barcode and Near Field Communication (NFC).Bar CodeA bar code reader decodes the data contained in the barcode and sends it to the computer. It produces a beam of light or a laser beam to read barcodes which is reflected by the bar code image. ... Read More

Let us learn the concepts of Fastag and Near Field Communication (NFC).Fast TagFASTag is an electronic scanner system used for toll collection in India, which is operated by the National Highway Authority of India.It incorporates the Radio Frequency Identification (RFID) technology for doing toll payments either prepaid or from savings ... Read More

Let us understand the concepts of Bar code and Fastag.Bar CodeA bar code reader decodes the data contained in the barcode and sends it to the computer. It produces a beam of light or a laser beam to read barcodes which is reflected by the bar code image.A light sensitive ... Read More

Query is a question or requesting information. Query language is a language which is used to retrieve information from a database.Query language is divided into two types −Procedural languageNon-procedural languageProcedural languageInformation is retrieved from the database by specifying the sequence of operations to be performed.For Example: Relational algebra.Structure Query language ... Read More

Let us understand the concepts of BorgBase and Tresorit before learning the differences between them.BorgBaseIt is a secure tool which is used for offsite backups and acts as a specialized hosting service for Borgbackup. It was launched in the year 2010 by Borge Collective. It can back up any sensitive ... Read More

Let us understand the concepts of Baidu Cloud and Tresorit before learning the differences between them.Baidu CloudBaidu is China's largest and most widely used search engine, just like Google in the U.S. It was launched in the year 2012 by Baidu Incorporation. It offers file management, resources sharing, cloud storage ... Read More