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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
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
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
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
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
executed before S2. Broadly, there are two classes of dependencies--control dependencies and data dependencies. Dependence analysis determines whether it is safe
Dependence_analysis
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
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
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)
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
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
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
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
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
the reciprocal of the elderly dependency ratio (and not simply the reciprocal, as sometimes mistakenly claimed). All data are for 2024 (except the Falkland
List of countries by dependency ratio
List_of_countries_by_dependency_ratio
Programming technique of receiving dependencies
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
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
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
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
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
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
Level of database normalization
with 2NF (which forbids dependencies on proper subsets of composite keys), in Codd's paper "Further Normalization of the Data Base Relational Model" in
Third_normal_form
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
Processor design concept
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
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
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
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
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
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
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
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
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
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
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
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
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
Microprocessor instruction set architecture
instructions). The template also encodes stops which indicate that a data dependency exists between data before and after the stop; stops may occur after any slot
IA-64
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
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
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)
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
Digital circuit that produces sums from inputs
pipelining Pipeline stall Operand forwarding Classic RISC pipeline Hazards Data dependency Structural Control False sharing Out-of-order Scoreboarding Tomasulo's
Adder_(electronics)
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)
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
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
Computer programming paradigm
stream, is typical. Because the kernel and stream abstractions expose data dependencies, compiler tools can fully automate and optimize on-chip management
Stream_processing
American computer scientist (born 1953)
1979), he introduced the chase, a method for testing implication of data dependencies that is now of widespread use in the database theory literature. This
David_Maier
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
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
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
Test for determining the greatest common divisor
difficult to analyze array references in compile time to determine data dependency (whether they point to same address or not). A simple and sufficient
GCD_test
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
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
different countries. Data marked World Resources Institute or WRI covers 182 independent countries and 13 dependencies, based on data calculated in 2000
List of countries and dependencies by length of coastline
List_of_countries_and_dependencies_by_length_of_coastline
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
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
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
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
Software quality metric
and data coupling. Connascence, introduced by Meilir Page-Jones, provides a systematic framework for analyzing and measuring coupling dependencies. It
Connascence
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
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
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
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
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)
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
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)
Demographics of the world List of countries and dependencies by area List of countries and dependencies by population density List of countries by population
List of countries and dependencies by population
List_of_countries_and_dependencies_by_population
Programming paradigm based on asynchronous data streams
arrays) or dynamic (e.g., event emitters) data streams with ease, and also communicate that an inferred dependency within the associated execution model exists
Reactive_programming
Database model
Functional dependency Functional dependency is the property that a value in a tuple may be derived from another value in that tuple. A functional dependency (FD
Relational_model
Compiler that optimizes generated code
potential problem with this is that XOR or subtract may introduce a data dependency on the previous value of the register, causing a pipeline stall, which
Optimizing_compiler
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
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
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)
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
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)
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
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
techniques which are used on the basis of data storage overhead, degree of parallelization and data dependencies. Some of the known techniques are: DOALL
DOPIPE
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)
Educational programming system coded 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
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
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
contain conditionals are made spatial by converting control dependencies into data dependencies through predication, whether partial or full, so that both
Coarse-grained reconfigurable array
Coarse-grained_reconfigurable_array
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
Normal form used in database normalization
redundancies based on functional dependencies. Edgar F. Codd released his original article "A Relational Model of Data for Large Shared Databanks" in June
Boyce–Codd_normal_form
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
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
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)
Normal form used in database normalization
particular row, we can refer to the data beneath each group of headings as x, y, and z respectively. A multivalued dependency X ↠ {\displaystyle \twoheadrightarrow
Fourth_normal_form
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)
A medical doctor, medical practitioner, physician, or simply doctor, is a health professional who practices medicine, which is concerned with promoting
List of countries by number of medical doctors
List_of_countries_by_number_of_medical_doctors
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 software engineering
simple storage mechanism for data, and simplifies serialization and passing data through layers; goes hand-in-hand with dependency injection and the repository
Plain_old_CLR_object
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
Set of software engineering methods
block. Software maintenance Dependence analysis Reaching definition Data dependency Frama-C a tool which implements slicing algorithms on C programs. Partial
Program_slicing
travel, tourism, insurance
DATA DEPENDENCY
DATA DEPENDENCY
Female
Russian
 Short form of Russian Yekaterina, KATA means "pure." Compare with other forms of Kata.
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.
Male
Turkish
Turkish name ATA means "ancestor."
Female
Slavic
 Short form of Slavic Bogdana, DANA means "gift from God." Compare with other forms of Dana.
Male
Hebrew
Variant spelling of Hebrew Dathan, DATAN means "belonging to a fountain."
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.
Female
Finnish
Variant form of Finnish Aada, AATA means "noble."
Male
Irish
 From Irish Gaelic Mac Dara, DARA means "son of oak." Compare with other forms of Dara.
Male
Iranian/Persian
 Short form of Persian Dârayavahush, DARA means "possesses a lot, wealthy." Compare with other forms of Dara.
Male
English
English surname transferred to unisex forename use, possibly DANA means "from Denmark."
Girl/Female
Hindu
A creeper
Female
Finnish
 Short form of Finnish Katariina, KATA means "pure." Compare with other forms of Kata.
Female
English
 English surname transferred to unisex forename use, possibly DANA means "from Denmark." Compare with other forms of Dana.
Female
Hungarian
 Short form of Hungarian Katalin, KATA means "pure." Compare with other forms of Kata.
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
Polish
Short form of Polish Edyta, DYTA means "rich battle."
Female
Hebrew
(×“Ö¼Ö¸× Ö¸×”) Feminine form of Hebrew Dan, DANA means "judge." Compare with other forms of Dana.
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.
DATA DEPENDENCY
DATA DEPENDENCY
DATA DEPENDENCY
DATA DEPENDENCY
DATA DEPENDENCY
DATA DEPENDENCY
DATA DEPENDENCY
p. pr. & vb. n.
of Date
a.
Erroneous in date; containing an anachronism.
pl.
of Datum
n.
A New Zealand forest tree (Metrosideros robusta), also, its hard dark red wood, used by the Maoris for paddles and war clubs.
n.
The fruit of the date palm; also, the date palm itself.
imp. & p. p.
of Date
v. i.
To have beginning; to begin; to be dated or reckoned; -- with from.
n. pl.
See Datum.
a.
Without date; having no fixed time.
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.
n.
Prior date; a date antecedent to another which is the actual date.
n.
Death; decease; the date of one's death.
n.
Given or assigned length of life; dyration.
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.
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.
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.
v. t.
To date erroneously.
a.
Being out of date; antiquated.
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