Physical backup is to copy for backing up all the physical files that belongs to database(like data files,control files,log files, executables etc) in logical backup , you don't take the copies of any physical things,you only extract the data from the data files into dump files(ex : using export . Go up to about interbase backup and restore options interbase uses the gbak command to perform backups the gbak command makes the following distinctions between backup types logical: the full backup typically performed by gbak is a “logical” backup. In computing, physical access describes any time a user can reach a computer's hardware conversely, logical access refers to every other type of computer use, where a user connects to a computer system without being in the same room as the machine. What is the difference between logical schema and physical schema how logical schema and physical schema are related and manipulated using sql as an administrator, you can create and manipulate schema objects, just as you can the logical and physical structures of your database i hope it my answer helped share. Difference between logical design and physical design ntc 410 august 8, 2006 understanding network topology can tell one a great deal about installing or expanding a network.
Logical memory: logical memory enables the user to use large amount of memory to store data it defines way to organize the physical memory such as ram and cache this enables the operating system to arrange memory into a logical manner such as as. 12 differences between logical (row level) and physical (block level) replication bdr uses postgresql 's logical decoding feature to implement a low overhead logical replication solution it has significant advantages - and some disadvantages - when compared to postgresql's older physical (block-based) streaming or archive-based replication with warm or hot standby. Logical vs physical data model before discussing the difference between logical and physical data model, we must know what a data model is a data model is a representation that describes the data and the relationships among them for a certain process a data model is an essential component used during database design.
One topic that often causes confusion in digital radio networks is the difference between physical and logical channels physical channels a physical radio channel is a radio frequency or pair of frequencies that is allocated by the regulatory body to an agency for communication. Hi all, i'm confused between the logical interface and virtual interface what exactly is a logical interface and a virtual interface this is a second l2 protocol on the same physical or logical (subinterface) running ppp, once negotiated, will create a brand new interface called a virtual-access interface difference between logical. A logical topology is how devices appear connected to the user a physical topology is how they are actually interconnected with wires and cables.
Differences between logical and physical network designs physical design layout outlines the pieces of the logical design network which are in a given network architecture besides, it refers to the arrangement of computers and other physical components. Logical cores are the number of physical cores times the number of threads that can run on each core through the use of hyperthreading for example, my 4-core processor runs two threads per core, so i have 8 logical processors. Conceptual, logical, physical it’s all relative it depends upon who you are the “requirements” for any one cell are coming from the cell above and the implementation of that cell is reflected in the cell below.
How logical schema and physical schema are related what is the difference between text and pg_catalogtext 2 understanding of schema and tablespaces - recommendation for a later seperation 1 how does logical and physical operators of query plans works in low level 4. Logical drive is the hard disk partition created in extended partition like primary partition, a logical partition can be used to install windows and any other types of files, but we are unable to set it active. Logical implies a higher view than the physical users relate to data logically by data element name however, the actual fields of data are physically located in sectors on a disk.
Physical toplogy refers to the actual shape or layout of the wires in a network the logical topology, on the other hand, refers more to how the data moves through the network. Logical vs physical database model logical and physical database models are required in order to visually present the database that has been proposed for a certain business requirement the models help in showing the association of business requirements and the database objects. Understanding the difference between physical access control and logical access control access control is used to regulate who is and is not able to view or use resources in a computing environment the two main types of access control are physical and logical.
The difference between logical and physical data dictionaries is the same as between logical and physical data model: logical data model is created at the requirements gathering, system analysis and top level design. Sql anywhere uses physical and logical indexes a physical index is the actual indexing structure as it is stored on disk a logical index is a reference to a physical index when you create a primary key, secondary key, foreign key, or unique constraint, the database server ensures referential integrity by creating a logical index for the. Explain the difference between conceptual, logical and physical design conceptual: business requirements are translated into common language to be understood by users and developers it is created by architect and customer together there is no technical aspect involved.