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Programming situation where an instruction refers to a prior instruction's data
A data dependency in computer science is a situation in which a program statement (instruction) refers to the data of a preceding statement. In compiler
Data_dependency
Relational database theory concept
In relational database theory, a functional dependency (FD) is constraint between two attribute sets, whereby values in one set (the determinant set) determine
Functional_dependency
Degree of interdependence between software modules
Technology Dependency Location Dependency Topology Dependency Data Format & Type Dependency Semantic Dependency Conversation Dependency Order Dependency Temporal
Coupling (computer programming)
Coupling_(computer_programming)
Topics referred to by the same term
object Data dependency, which describes a dependence relation between statements in a program Dependence analysis, in compiler theory Dependency (UML)
Dependency
Directed graph representing dependencies
computer science and digital electronics, a dependency graph is a directed graph representing dependencies of several objects towards each other. It is
Dependency_graph
Origins and events of data
provides a historical record of data origins and transformations. It supports forensic activities such as data-dependency analysis, error/compromise detection
Data_lineage
Type of low-level computer architecture
allowed to be completed in data dependency order. This is accomplished in CPUs that dynamically tag the data dependencies of the code in the execution
Dataflow_architecture
Computing concept
architectures, the computation is not actively driven by data dependencies, rather, the simple data dependencies of the accelerated kernel are used to program the
Dataflow
Representation of graph notation
graph of a program's control and data dependencies. Nodes represent program statements and edges represent dependencies between these statements. PDGs are
Program_dependence_graph
executed before S2. Broadly, there are two classes of dependencies--control dependencies and data dependencies. Dependence analysis determines whether it is safe
Dependence_analysis
Case in parallel computing
vector instructions, which operate on multiple data items. The first step is to build the dependency graph, identifying which statements depend on which
Automatic_vectorization
Software programming technique
In software engineering, dependency injection is a programming technique in which an object or function receives other objects or functions that it requires
Dependency_injection
Relationship between software
A transitive dependency is an indirect dependency relationship between software components. This kind of dependency is held by virtue of a transitive relation
Transitive_dependency
Problems with central processing unit design
solutions and algorithms used to resolve data hazards: insert a pipeline bubble whenever a read after write (RAW) dependency is encountered, guaranteed to increase
Hazard (computer architecture)
Hazard_(computer_architecture)
Type of parallel processing
auto-vectorize some loops, potentially taking some assertions about the lack of data dependency. This is not as flexible as manipulating SIMD variables directly, but
Single instruction, multiple data
Single_instruction,_multiple_data
Technique that abstracts logical registers from physical registers
eliminate false data dependencies arising from the reuse of registers by successive instructions that do not have any real data dependencies between them
Register_renaming
Reduction of data redundancy
insertion, update and deletion dependencies. To reduce the need for restructuring the collection of relations, as new types of data are introduced, and thus
Database_normalization
International relations theory
Dependency theory is the idea that resources flow from a "periphery" of poor and exploited states to a "core" of wealthy states, enriching the latter at
Dependency_theory
CPU that implements instruction-level parallelism within a single processor
from a sequential instruction stream The CPU dynamically checks for data dependencies between instructions at run time (versus software checking at compile
Superscalar_processor
Ability of computer instructions to be executed simultaneously with correct results
exploited through techniques such as multiprocessing and multithreading. Data dependency Memory-level parallelism (MLP) "The History of Computing". mason.gmu
Instruction-level_parallelism
Combinational digital circuit
FPUs, and graphics processing units (GPUs). The inputs to an ALU are the data to be operated on, called operands, and a code indicating the operation to
Arithmetic_logic_unit
Superscalar efficiency technique
multiple instructions to be dispatched at once regardless of the data dependencies between those instructions. This allows for out-of-order execution
Shelving_buffer
Computer component
has a two-way set-associative TLB for data loads and stores. Some processors have different instruction and data address TLBs. A TLB has a fixed number
Translation_lookaside_buffer
Microprocessor instruction set architecture
instructions). The template also encodes stops which indicate that a data dependency exists between data before and after the stop. All instructions between a pair
IA-64
Data dependency in a CPU
A Load-Hit-Store, sometimes abbreviated as LHS, is a data dependency in a CPU in which a memory location that has just been the target of a store operation
Load-Hit-Store
Control dependency is a situation in which a program instruction executes if the previous instruction evaluates in a way that allows its execution. An
Control_dependency
Topics referred to by the same term
unprocessed data Rawdisk, binary level disk access Read after write, technologies used for CD-R and CD-RW Read after write (RAW) hazard, a data dependency hazard
Raw
Ability of a CPU to provide multiple threads of execution concurrently
needed] The purpose of fine-grained multithreading is to remove all data dependency stalls from the execution pipeline. Since one thread is relatively
Multithreading (computer architecture)
Multithreading_(computer_architecture)
Central computer component that executes instructions
reduce delays due to data dependencies. Also in case of single instruction stream, multiple data stream, a case when a lot of data from the same type has
Central_processing_unit
Hardware cache of a central processing unit
at runtime into a register bank, allowing the CPU to break false data dependencies and thus easing pipeline hazards. Register files sometimes also have
CPU_cache
Dependency ratios are ratios of the numbers of dependents (youths aged 0–14 and/or elderly aged 65+) to the number of working-age adults (15–64). They
List of countries by dependency ratio
List_of_countries_by_dependency_ratio
Level of database normalization
third normal form if it is in second normal form and also lacks non-key dependencies, meaning that no non-prime attribute is functionally dependent on (that
Third_normal_form
Age-population ratio of those in the labor force to those not in the labor force
Dependency ratios are ratios of the numbers of dependents (youths aged 0–14 and/or elderly aged 65+) to the number of working-age adults (15–64). They
Dependency_ratio
Register in a computer's CPU
memory buffer register (MBR) or memory data register (MDR) is the register in a computer's CPU that stores the data being transferred to and from the immediate
Memory_buffer_register
Programming paradigm in which many processes are executed simultaneously
processing units). Instructions can be grouped together only if there is no data dependency between them. Scoreboarding and the Tomasulo algorithm (which is similar
Parallel_computing
Array of processing elements specialized for parallelizable workloads
computations between processing elements while ensuring that their data dependencies land either within the same element or the same region of elements
Spatial_architecture
Representation of a computer program
representation that captures syntactic structure, control flow, and data dependencies in a property graph. The concept was originally introduced to identify
Code_property_graph
Compiler optimization
instruction-level parallelism. This is possible when there are no data dependencies between the bodies of the two loops (this is in stark contrast to
Loop_fission_and_fusion
Full constraint between two sets of attributes in a relation
multivalued dependency is a full constraint between two sets of attributes in a relation. In contrast to the functional dependency, the multivalued dependency requires
Multivalued_dependency
The following is a list of countries and dependencies ranked by population density, sorted by inhabitants per square kilometre or square mile. The list
List of countries and dependencies by population density
List_of_countries_and_dependencies_by_population_density
Security-related instruction code processor extension
SGX involves encryption by the CPU of a portion of memory (the enclave). Data and code originating in the enclave are decrypted on the fly within the CPU
Software_Guard_Extensions
Computer programming paradigm
stream, is typical. Since the kernel and stream abstractions expose data dependencies, compiler tools can fully automate and optimize on-chip management
Stream_processing
Process of analyzing large data sets
Association rule learning (dependency modeling) – Searches for relationships between variables. For example, a supermarket might gather data on customer purchasing
Data_mining
Welsh computer scientist (born 1978)
papers on mobile services, Human–computer interaction (HCI), bluetooth, data dependency graphs. and Fuel Panics: Insights From Spatial Agent-Based Simulation
Eben_Upton
This is a list of the world's countries and their dependencies, ranked by total area, including land and water. This list includes entries that are not
List of countries and dependencies by area
List_of_countries_and_dependencies_by_area
Functional programming language
moving of the "sequential evaluation" operation seq (which creates a data dependency between values, and is used in lazy languages to avoid excessive memory
Haskell
Flow Diagram
success of prior operations. FFBDs may also express input and output data dependencies between functional blocks, as shown in figures below, but FFBDs primarily
Functional_flow_block_diagram
Extremely large or complex datasets
and causal effects) from large sets of data with low information density to reveal relationships and dependencies, or to perform predictions of outcomes
Big_data
Process to determine relationships among statements
Two general categories of dependencies that will be analyzed in the loop are data dependencies and control dependencies. Loop dependence analysis occur
Loop_dependence_analysis
Method of CPU communication
is sometimes referred to as isolated I/O. On the x86 architecture, index/data pair is often used for port-mapped I/O. Different CPU-to-device communication
Memory-mapped I/O and port-mapped I/O
Memory-mapped_I/O_and_port-mapped_I/O
Instruction scheduling method
no conflicts and the hardware is available. In a scoreboard, the data dependencies of every instruction are logged, tracked and strictly observed at
Scoreboarding
Method of analyzing variables in software
variable dependencies. In 2002, Markus Mohnen described a new method of data-flow analysis that does not require the explicit construction of a data-flow
Data-flow_analysis
where there is published total fertility rate (TFR) data ranked by sovereign states and dependencies, and are ordered by organization type – intergovernmental
List of countries by total fertility rate
List_of_countries_by_total_fertility_rate
Computer hardware
data dependencies of other instructions scheduled in the buffer. The head of the buffer will be committed once its result is valid. Its dependencies will
Re-order_buffer
Mapping of a known quantity to an unknown entity
fields and tables of a relational database to minimize redundancy and dependency, is the central, defining function of the discipline.[page needed] Authentication
Identification_(information)
Area in a hospital
A High-Dependency Unit (HDU) also known as High Care Unit (HCU) is an area in a hospital, usually located close to the intensive care unit, where patients
High-dependency_unit
Computer hardware technology
Configuration and Data PCR4 – IPL (Initial Program Loader) Code (usually the Master Boot Record – MBR) PCR5 – IPL Code Configuration and Data (for use by the
Trusted_Execution_Technology
Python library for parallel computing
function that performs a unit of computation and an edge represents the data dependency between the upstream and downstream task. After a task graph is generated
Dask_(software)
Topics referred to by the same term
Wheels format of the VintageAirRally Write after write (WAW) hazard, a data dependency hazard Wuzheng Auto Works, a brand of trucks owned by the Shandong
WAW
Visual representation of data
Data and information visualization (data viz/vis or info viz/vis) is the practice of designing and creating graphic or visual representations of quantitative
Data and information visualization
Data_and_information_visualization
This article contains a list of countries and dependencies by length of coastline, in kilometers. Though the coastline paradox stipulates that coastlines
List of countries and dependencies by length of coastline
List_of_countries_and_dependencies_by_length_of_coastline
Proprietary simultaneous multithreading implementation by Intel
processor may stall due to a cache miss, branch misprediction, or data dependency.) This technology is transparent to operating systems and programs
Hyper-threading
Programming paradigm based on applying and composing functions
enable caching optimizations such as memoization.) If there is no data dependency between two pure expressions, their order can be reversed, or they
Functional_programming
Network that allows computers to share resources and communicate with each other
encrypting data so only the intended recipient can decrypt it, with no dependency on third parties. End-to-end encryption prevents intermediaries, such
Computer_network
Level of database normalization
it is in first normal form (1NF) and contains no partial dependencies. A partial dependency occurs when a non-prime attribute (that is, one not part of
Second_normal_form
US government agency
its inception in 1948. This can be primarily due to the increasing data dependency many countries and societies are beginning to turn towards. The volume
Directorate of Science and Technology
Directorate_of_Science_and_Technology
Type of parallel computing architecture of tightly coupled nodes
data dependencies are implicitly handled by the programmable node interconnect and there are no sequential steps in managing the highly parallel data
Systolic_array
Compiler optimization technique
block, we need the concept of a data dependency. There are three types of dependencies, which also happen to be the three data hazards: Read after Write (RAW
Instruction_scheduling
Text corpus with tree annotations
Greek Dependency Treebank 2.0. https://github.com/PerseusDL/treebank_data/edit/master/AGDT2/guidelines Mambrini, F. 2016. The Ancient Greek Dependency Treebank:
Treebank
equality-generating dependency (EGD) is a certain kind of constraint on data. It is a subclass of the class of embedded dependencies (ED). An algorithm
Equality-generating dependency
Equality-generating_dependency
Cryptographic attack
measurements. Any algorithm that has data-dependent timing variation is vulnerable to timing attacks. Removing timing-dependencies is difficult since varied execution
Timing_attack
Network analysis approach
The dependency network approach provides a system level analysis of the activity and topology of directed networks. The approach extracts causal topological
Dependency_network
Where all data references are valid
relational databases to return incomplete data, usually with no indication of an error. An inclusion dependency over two (possibly identical) predicates
Referential_integrity
Graphical model
Relational dependency networks (RDNs) are graphical models which extend dependency networks to account for relational data. Relational data is data organized
Relational_dependency_network
Topics referred to by the same term
by Chief Keef from Back From The Dead 2, 2014 Write after read, a data dependency hazard WAR (file format) (Web application ARchive), a file format used
War_(disambiguation)
(2.10%) Russia (1.80%) Others (45.7%) This is a list of countries and dependencies by population. It includes sovereign states, inhabited dependent territories
List of countries and dependencies by population
List_of_countries_and_dependencies_by_population
Database algorithm
simple fixed-point algorithm testing and enforcing implication of data dependencies in database systems. It plays important roles in database theory as
Chase_(algorithm)
1998 microprocessor
core utilized branch prediction and a number of techniques to resolve data dependency conflicts. According to Rise, the mP6 should perform almost as fast
MP6
copy of the message. If coded carefully (to avoid creating a false data dependency), half of the slice table loads can begin before the previous loop
Computation of cyclic redundancy checks
Computation_of_cyclic_redundancy_checks
Software quality metric
and data coupling. Connascence, introduced by Meilir Page-Jones, provides a systematic framework for analyzing and measuring coupling dependencies. It
Connascence
Instruction set architecture
load data before it is known whether it will be used (bypassing control dependencies), or whether it will be modified before it is used (bypassing data dependencies)
Explicitly parallel instruction computing
Explicitly_parallel_instruction_computing
Need for a drug, whose discontinuation results in withdrawal symptoms
or withdrawal, or without physiological dependence. DSM-IV substance dependencies include: 303.90 Alcohol dependence 304.00 Opioid dependence 304.10 Sedative
Substance_dependence
In the Unified Modeling Language (UML), a Dependency is "a Relationship that signifies that a single model Element or a set of model Elements requires
Dependency_(UML)
Type of data asset
software bill of materials (SBOM) to document its dependencies and components. Ownership of a data product is aligned to a specific domain or use case
Data_product
Data analysis technique
and functional dependencies Assess whether known metadata accurately describes the actual values in the source database Understanding data challenges early
Data_profiling
Concept that city layouts favor automobiles over other modes of transportation
Car dependency (also called car dependence) is a pattern in urban planning that occurs when infrastructure favours automobiles over other modes of transport
Car_dependency
Programming language written graphically by a user
have graphical tools to illustrate (but not define) control flow and data dependencies. Parsers for visual programming languages can be implemented using
Visual_programming_language
State for a computing process
it is not directly associated with blocking. Concurrent computing Data dependency Non-blocking algorithm Race condition Scheduling (computing) Stallings
Blocking_(computing)
Graphical model
parameterize from data, as there are efficient algorithms for learning both the structure and probabilities of a dependency network from data. Such algorithms
Dependency network (graphical model)
Dependency_network_(graphical_model)
Algorithm in numerical analysis
the loop depends on the result of a previous iteration (loop-carried data dependency). This reduces the performance gain from modern superscalar processor
Kahan_summation_algorithm
Parallel computing architecture
dictated by Amdahl's law also do not apply in the same way because data dependencies are implicitly handled by the programmable node interconnect. Therefore
Multiple instruction, single data
Multiple_instruction,_single_data
Concept in computer architecture and processor design
Speculative execution Out-of-order execution Simultaneous multithreading Data dependency Kartunov, Victor; Yury, Malich; Keruchenko, Jan; Levchenko, Vadim (2005-06-06)
Replay_system
execution concurrency to a feedback arc set optimization of a rule-data dependency graph. This process was similar to James Hoe's original algorithm.
Atom_(programming_language)
Parallel processing technique
stages of shifting and adding require 6 instructions, each with a data dependency on the previous one, so take at least 6 clock cycles. A multiplication
SWAR
Decision tracking and managing method
structure matrix (DSM; also referred to as dependency structure matrix, dependency structure method, dependency source matrix, problem solving matrix, incidence
Design_structure_matrix
This is a list of countries and dependencies by annual electricity production. China is the world's largest electricity producing country, followed by
List of countries by electricity production
List_of_countries_by_electricity_production
Open standard process model
important and frequent dependencies between phases. The outer circle in the diagram symbolizes the cyclic nature of data mining itself. A data mining process
Cross-industry standard process for data mining
Cross-industry_standard_process_for_data_mining
Application framework for Java platform
implement dependency injection: constructor-based dependency injection, setter-based dependency injection and field-based dependency injection. Dependency lookup
Spring_Framework
Sociological term
Welfare dependency is the state in which a person or household is reliant on government welfare benefits for their income for a prolonged period of time
Welfare_dependency
Parallel scripting language
program statements will automatically run in parallel unless there is a data dependency between them, given sufficient computing resources. The design of the
Swift (parallel scripting language)
Swift_(parallel_scripting_language)
DATA DEPENDENCY
DATA DEPENDENCY
Female
Polish
 Variant spelling of Polish Dyta, DITA means "rich battle." Compare with another form of Dita.
Female
English
 Middle English name DARA means "brave, daring." Compare with another form of Dara.
Girl/Female
Hindu
A creeper
Female
Finnish
 Short form of Finnish Katariina, KATA means "pure." Compare with other forms of Kata.
Male
Turkish
Turkish name ATA means "ancestor."
Female
Hungarian
 Short form of Hungarian Katalin, KATA means "pure." Compare with other forms of Kata.
Female
Hindi/Indian
(लता) Hindi name derived from a plant name, from the Sanskrit word lata, LATA means "creeper," in reference to a creeping plant.
Female
Slavic
 Short form of Slavic Bogdana, DANA means "gift from God." Compare with other forms of Dana.
Female
English
 English surname transferred to unisex forename use, possibly DANA means "from Denmark." Compare with other forms of Dana.
Male
Hebrew
Variant spelling of Hebrew Dathan, DATAN means "belonging to a fountain."
Female
Polish
Short form of Polish Edyta, DYTA means "rich battle."
Male
Irish
 From Irish Gaelic Mac Dara, DARA means "son of oak." Compare with other forms of Dara.
Female
Hebrew
(דִּיתָה) Pet form of Hebrew Yehuwdiyth, DITA means "Jewess" or "praised." Compare with another form of Dita.
Male
Irish
Irish Gaelic name MAC DARA means "son of oak." This is the name of a patron saint and is still common in Ireland, especially in Connemara.
Female
Russian
 Short form of Russian Yekaterina, KATA means "pure." Compare with other forms of Kata.
Male
Hebrew
(דֶּרַע) Hebrew name DARA means "the arm." In the bible, this is the name of a son of Zerah. Compare with other forms of Dara.
Male
English
English surname transferred to unisex forename use, possibly DANA means "from Denmark."
Female
Finnish
Variant form of Finnish Aada, AATA means "noble."
Female
Hebrew
(×“Ö¼Ö¸× Ö¸×”) Feminine form of Hebrew Dan, DANA means "judge." Compare with other forms of Dana.
Male
Iranian/Persian
 Short form of Persian Dârayavahush, DARA means "possesses a lot, wealthy." Compare with other forms of Dara.
DATA DEPENDENCY
DATA DEPENDENCY
Girl/Female
Hindu
Creative
Boy/Male
Tamil
Daughter, Goddess Durga, Great achiever, Happiness, Lord Shivas son, Young Man
Girl/Female
Polish
Girl/Female
Hebrew Yiddish
Shelter.
Boy/Male
French Italian Hebrew Spanish
Born on Easter.
Girl/Female
Hindu
Winner, Victor
Boy/Male
Hebrew
Enlightens. Shining. Surname.
Girl/Female
Tamil
A Pearl
Boy/Male
Arabic, Hindu, Indian, Muslim
Horseman; Knight
Girl/Female
Arabic
Meadow
DATA DEPENDENCY
DATA DEPENDENCY
DATA DEPENDENCY
DATA DEPENDENCY
DATA DEPENDENCY
n.
A New Zealand forest tree (Metrosideros robusta), also, its hard dark red wood, used by the Maoris for paddles and war clubs.
v. t.
To date erroneously.
n.
The fruit of the date palm; also, the date palm itself.
n.
Prior date; a date antecedent to another which is the actual date.
n.
Assigned end; conclusion.
n.
That addition to a writing, inscription, coin, etc., which specifies the time (as day, month, and year) when the writing or inscription was given, or executed, or made; as, the date of a letter, of a will, of a deed, of a coin. etc.
n.
The point of time at which a transaction or event takes place, or is appointed to take place; a given point of time; epoch; as, the date of a battle.
n. pl.
See Datum.
p. pr. & vb. n.
of Date
a.
Erroneous in date; containing an anachronism.
imp. & p. p.
of Date
v. t.
To note or fix the time of, as of an event; to give the date of; as, to date the building of the pyramids.
v. i.
To have beginning; to begin; to be dated or reckoned; -- with from.
a.
Being out of date; antiquated.
n.
Given or assigned length of life; dyration.
pl.
of Datum
a.
Without date; having no fixed time.
v. t.
To note the time of writing or executing; to express in an instrument the time of its execution; as, to date a letter, a bond, a deed, or a charter.
n.
Death; decease; the date of one's death.