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Access method to read and write datasets sequentially
mainframe operating systems, Queued Sequential Access Method (QSAM) is an access method to read and write datasets sequentially. QSAM is available on OS/360
Queued Sequential Access Method
Queued_Sequential_Access_Method
Computer memory concept
face no penalty. Direct-access storage device Queued sequential access method Sequential data Random and Sequential Data Access, Microsoft TechNet Irfan
Sequential_access
Access method to read and write datasets sequentially
to the more powerful but less flexible Queued Sequential Access Method (QSAM) which allows programs to access logical records within physical blocks of
Basic sequential access method
Basic_sequential_access_method
APIs in IBM mainframe computer operating systems
access methods in approximate chronological order: BDAM - Basic direct access method BSAM - Basic sequential access method QSAM - Queued sequential access
Access_method
sequential access memory still in use; historically, drum memory has also been used. Sequential access Basic sequential access method (BSAM) Queued sequential
Sequential_access_memory
Method for creating, maintaining, and manipulating computer files
Indexed Sequential Access Method (ISAM) is a method for creating, maintaining, and manipulating computer files of data so that records can be retrieved
ISAM
Secondary storage device
access methods:[citation needed] Basic sequential-access method (BSAM) Basic indexed sequential-access method (BISAM) Queued sequential-access method
Direct-access_storage_device
Joint hierarchical database made by IBM
native z/OS access method, or OSAM, an IMS-specific method optimizing I/O for IMS access patterns, particularly benefiting from sequential access (OSAM Sequential
IBM Information Management System
IBM_Information_Management_System
Abstract data type in computer science
queues naturally suggest a sorting method: insert all the elements to be sorted into a priority queue, and sequentially remove them; they will come out in
Priority_queue
Method (BSAM), Basic Partitioned Access Method (BPAM) and Queued Sequential Access Method (QSAM); see Access methods and Data set (IBM mainframe) for more
List_of_file_systems
Algorithm for caching data
like a FIFO queue; it evicts blocks in the order in which they were added, regardless of how often or how many times they were accessed before. The cache
Cache_replacement_policies
Device driver out-of-order processing technique for storage controllers
execute all previously queued simple-tagged commands before this command, and must execute this command before any subsequently queued simple-tagged commands
Tagged_queuing
Abstract data type
element can be removed. A queue is an example of a linear data structure, or more abstractly a sequential collection. Queues are common in computer programs
Queue_(abstract_data_type)
Data structure for integer priorities
numerical priorities and allows quick access to the element with minimum (or maximum) priority. In the bucket queue, the priorities must be integers, and
Bucket_queue
Data storage technologies that use magnetic tape
but does not change the fundamental sequential access nature of tape.[citation needed] Tape has a long random access time since the deck must wind an average
Magnetic-tape_data_storage
operation on certain abstract data types, specifically sequential collections such as stacks and queues, which returns the value of the top ("front") of the
Peek_(data_type_operation)
Divide and conquer sorting algorithm
related to the sequential top-down merge algorithm while others have a different general structure and use the K-way merge method. The sequential merge sort
Merge_sort
Input/output performance measurement
read and write operations, the mix of sequential and random access patterns, the number of worker threads and queue depth, as well as the data block sizes
IOPS
Support programs included in or available for IBM OS/360 and successors
(FCB, UCS) load ICE DFSORT ICK Device Support Facilities (DSF) IDC Access Method Services (AMS) IEB Dataset utilities. Dataset utilities "are used to
Support programs for OS/360 and successors
Support_programs_for_OS/360_and_successors
Observational methods in psychological research entail the observation and description of a subject's behavior. Researchers utilizing the observational method can
Observational methods in psychology
Observational_methods_in_psychology
Type of computer file existing on IBM mainframe operating systems
Access Method(GAM) IS Indexed Sequential Access Method (ISAM) MQ QTAM message queue in application PO Partitioned Organization PS Physical Sequential
Data_set_(IBM_mainframe)
Algorithm which can do multiple operations in a given time
to solve a task requires developing new ideas and methods not needed in the design of a sequential algorithm to solve the same problem. Examples of such
Parallel_algorithm
Property of some operation(s) in concurrent programming
that: The extended list can be re-expressed as a sequential history (is serializable). That sequential history is a subset of the original unextended list
Linearizability
Variable used in a concurrent system
entry. The producers, one at a time, gain access to the queue through useQueue and deposit items in the queue. Once the first producer exits its critical
Semaphore_(programming)
Family of computing problems
Cooperating sequential processes, section 4.3. The Bounded Buffer. Per Brinch Hansen; 1973; Operating System Principles, 3.4.7. Event Queues C.A.R. Hoare;
Producer–consumer_problem
Data structure that can be used by multiple threads
designed for access and modification by multiple computing threads (or processes or nodes) on a computer, for example concurrent queues, concurrent stacks
Concurrent_data_structure
Data structure
Such tuning involves writing data in a sequential manner as opposed to as a series of separate random access requests. This optimization reduces total
Log-structured_merge-tree
that run on various software and hardware platforms QTAM—Queued Teleprocessing Access Method RA—Registration authority RAB—Rapid application building
List of computing and IT abbreviations
List_of_computing_and_IT_abbreviations
Sharing of data between running processes in a computer system
programming portal Berkeley sockets Computer network programming Communicating Sequential Processes (CSP paradigm) Data Distribution Service Database-as-IPC Protected
Inter-process_communication
Rules that guarantee predictable computer memory operation
the same consistency model to the memory access types. Issue vs. view-based Issue method provides sequential consistency simulation by defining the restrictions
Consistency_model
Problems involving random attributes
first version of multi-bandit problems was formulated in the area of sequential designs by Robbins (1952). Since then, there had not been any essential
Stochastic_scheduling
Hardware cache of a central processing unit
write can be queued and there are few limitations on the execution of subsequent instructions; the processor can continue until the queue is full. For
CPU_cache
Computer storage device with no moving parts
turn them off. Support for queued TRIM, a SATA 3.1 feature that results in TRIM commands not disrupting the command queues, was introduced in Linux kernel
Solid-state_drive
Software architecture
directories. The records in a directory can be sequentially read by using the DDM Directory Access Method. The files identified by directory records can
Distributed Data Management Architecture
Distributed_Data_Management_Architecture
Set of software design patterns in a database
optimistic locking each row has an independent version number, typically a sequential counter. This allows a process to atomically update a row and increment
Change_data_capture
Method by which work is assigned
operating systems: The Single Sequential Scheduler option, also known as the Primary Control Program (PCP) provided sequential execution of a single stream
Scheduling_(computing)
Operating system for IBM S/360 and later mainframes
was the job queue manager for OS/VS1 (see above). IBM hoped that Virtual storage access method (VSAM) would replace its earlier sequential, indexed and
OS/360_and_successors
static class. The method must obey any member access restriction like any other method external to the class; thus static methods cannot break object
Comparison of C Sharp and Java
Comparison_of_C_Sharp_and_Java
Procedure in computing
other data structures such as Virtual Storage Access Method (VSAM) or Indexed Sequential Access Method (ISAM), or even formats fetched from outside sources
Extract,_transform,_load
Data structure with nodes pointing to the next node
array data structures) allow constant-time random access, while linked lists allow only sequential access to elements. Singly linked lists, in fact, can
Linked_list
Collections in Java
The base interfaces for queues are called Queue. Dictionaries/Maps store references to objects with a lookup key to access the object's values. One example
Java_collections_framework
Technology for computer networking
passing is a channel access method providing fair access for all stations, and eliminating the collisions of contention-based access methods. Following its
Token_Ring
Abstract data type
top of the stack, but accessing a datum deeper in the stack may require removing multiple other items first. Considered a sequential collection, a stack
Stack_(abstract_data_type)
Method of CPU communication
complementary methods of performing input/output (I/O) between the central processing unit (CPU) and peripheral devices in a computer (often mediating access via
Memory-mapped I/O and port-mapped I/O
Memory-mapped_I/O_and_port-mapped_I/O
Operating system for IBM mainframes
Facility Extended Function (DFEF) 5740-AM3 Sequential Access Method Extended (SAM-E) 5740-AM8 Access Method Services Cryptographic Option 5748-UT2 Offline
MVS
Object or module in concurrent programming
with other threads' accesses to the queue. The queue.enqueue and queue.dequeue methods likely have instructions to update the queue's member variables such
Monitor_(synchronization)
Self-adjusting binary search tree
optimality. Scanning theorem—Also known as the sequential access theorem or the queue theorem. Accessing the n elements of a splay tree in symmetric order
Splay_tree
Algorithm
increasing job size are placed in a queue, with the tasks belonging to the largest gang scheduled first, but this method of execution tends to lead to the
Gang_scheduling
Flash memory card format
sustained sequential read and write speeds. These are most relevant for handling large files—such as photos and videos—where data is accessed in contiguous
SD_card
Algorithmic application of graph theory
Component Labeling". Rosenfeld, Azriel; Pfaltz, John L. (October 1966). "Sequential Operations in Digital Picture Processing". J. ACM. 13 (4): 471–494. doi:10
Connected-component_labeling
Model of concurrent computation
based on composing sequential processes, the actor model was developed as an inherently concurrent model. In the actor model sequentiality was a special case
Actor_model
Group of standard library class templates
custom classes. One common property of all sequential containers is that the elements can be accessed sequentially. Like all other standard library components
Sequence_container_(C++)
quasi-birth–death processes, for which efficient solution methods are known. A fluid queue can be viewed as a large tank, typically assumed to be of infinite
Fluid_queue
Reusable solution template to a commonly-needed software behavior
prototypical micro-architecture, as a set of program constituents (e.g., classes, methods...) and their relationships. A developer adapts the motif to their codebase
Software_design_pattern
IBM mainframe communications protocol
era, these access methods were initially BTAM (Basic Telecommunications Access Method) and QTAM (Queued Telecommunications Access Method) – which was
Binary Synchronous Communications
Binary_Synchronous_Communications
Particular way of storing and organizing data in a computer
allocation in arrays facilitates rapid access and modification operations, leading to optimized performance in sequential data processing scenarios. There are
Data_structure
Synchronization mechanism for enforcing limits on access to a resource
accessed publicly. Similar to Java, C# can also synchronize entire methods, by using the MethodImplOptions.Synchronized attribute. [MethodImpl(MethodImplOptions
Lock_(computer_science)
Thread synchronization mechanism
basic concept of a ticket lock is similar to the ticket queue management system. This is the method that many bakeries and delis use to serve customers in
Ticket_lock
Algorithm for virtual memory implementation
frequent access. It is particularly resistant to sequential scans. The 2Q algorithm improves upon the LRU and LRU/2 algorithm. By having two queues, one for
Page_replacement_algorithm
Hypothetical computing devices
be computed by some Turing machine.) The sequential-machine models All of the following are called "sequential machine models" to distinguish them from
Turing_machine_equivalents
Computer component
doubling the memory access time. Hence, the TLB is used to reduce the time taken to access the memory locations in the page-table method. The TLB is a cache
Translation_lookaside_buffer
Method of improving instruction-level parallelism
with some instruction by dividing incoming instructions into a series of sequential steps (the eponymous "pipeline") performed by different processor units
Instruction_pipelining
System with multiple networked computers
output. Formalisms such as random-access machines or universal Turing machines can be used as abstract models of a sequential general-purpose computer executing
Distributed_computing
Subfield of computer science and mathematics
processors. Parallel computer programs are more difficult to write than sequential ones, because concurrency introduces several new classes of potential
Theoretical_computer_science
Operating system
OS/360 introduced Telecommunications Access Method (TCAM) as the successor to Queued Telecommunications Access Method (QTAM). SVS does not include QTAM.
OS/VS2_(SVS)
Problems with central processing unit design
forwarding, and in the case of out-of-order execution, the scoreboarding method and the Tomasulo algorithm. Instructions in a pipelined processor are performed
Hazard (computer architecture)
Hazard_(computer_architecture)
Formal specification language
============================== Communicating sequential processes Alloy (specification language) B-Method Computation tree logic PlusCal Temporal logic
TLA+
Computer processing technique to boost memory performance
A+2 and so on. This pattern of prefetching successive blocks is called Sequential Prefetching. It is mainly used when contiguous locations are to be prefetched
Cache_prefetching
Ancient algorithm for generating prime numbers
prime. This is the sieve's key distinction from using trial division to sequentially test each candidate number for divisibility by each prime. Once all the
Sieve_of_Eratosthenes
Historical account
using TCAM (Telecommunications Access Method), which eventually replaced the earlier Queued Telecommunications Access Method (QTAM). TCAM's name suggests
History of IBM mainframe operating systems
History_of_IBM_mainframe_operating_systems
Node ordering for directed acyclic graphs
Peter; Mehlhorn, Kurt; Dietzfelbinger, Martin; Dementiev, Roman (2019), Sequential and Parallel Algorithms and Data Structures: The Basic Toolbox, Springer
Topological_sorting
Domain specific concurrent programming language originally developed by Microsoft
not switch to a general-purpose programming language (like C#) for the sequential parts of the concurrent components. The main idiom of programming in Axum
Axum_(programming_language)
scheduling of the dataflow instruction sequences derived from the formerly sequential program. The BMDFM dynamic scheduling subsystem performs a symmetric multiprocessing
Binary Modular Dataflow Machine
Binary_Modular_Dataflow_Machine
Comprehensive outline of core abstractions in the field of computer science
provides a particular way of organizing data in memory so that it can be accessed and modified according to specific rules. The data structure itself is
List of abstractions (computer science)
List_of_abstractions_(computer_science)
Family of database software by Microsoft
sequence to access the tables referred in the query, which sequence to execute the operations and what access method to be used to access the tables.
Microsoft_SQL_Server
Core of a computer operating system
provide access to the facilities provided by each other, kernels must also provide running programs with a method to make requests to access these facilities
Kernel_(operating_system)
values, or type specifications. linear search A method for finding an element within a list. It sequentially checks each element of the list until a match
Glossary_of_computer_science
Use of lean manufacturing principles in software development
systems Queueing theory Motivation Measurements Test-driven development Since agile software development is an umbrella term for a set of methods and practices
Lean_software_development
Hardware description and hardware verification language
An always_ff block models synchronous logic (especially edge-sensitive sequential logic): always_ff @(posedge clk) count <= count + 4'd1; Electronic design
SystemVerilog
Logic for safely sharing computer resources
primitive is often referred to as yield. Lamport's bakery algorithm assumes a sequential consistency memory model. Few, if any, languages or multi-core processors
Lamport's_bakery_algorithm
IBM mainframe operating system designed for use with smaller machines
DOS/360 offered Basic Telecommunications Access Method (BTAM) and Queued Telecommunications Access Method (QTAM). BTAM was primitive and hard to use
DOS/360_and_successors
Digital workload distribution techniques
access to a website. Programmatic traffic manipulation At least one balancer allows the use of a scripting language to allow custom balancing methods
Load_balancing_(computing)
Computer memory management scheme
file is rarely read or written in sequential order, so the performance advantage of having a completely sequential page file is minimal. However, a large
Memory_paging
Programming language
language has data, pattern matching, and functional programming. The sequential subset of the Erlang language supports eager evaluation, single assignment
Erlang_(programming_language)
Electro-mechanical data storage device
vibration limit rotational speed, advancing density becomes the main method to improve sequential transfer rates. Higher speeds require a more powerful spindle
Hard_disk_drive
Source available in-memory key–value database
also being persisted to disk in a format optimized for sequential access rather than random access. The formatted data is only reconstructed into memory
Redis
Randomized algorithm
Muller, M.E.; Rezucha, I. (1962). "Development of sampling plans by using sequential (item by item) selection techniques and digital computers". Journal of
Reservoir_sampling
Parallel programming model
into queues, one queue for each name), and a reduce method, which performs a summary operation (such as counting the number of students in each queue, yielding
MapReduce
Type of digital adder
Access. 8: 209181–209190. Bibcode:2020IEEEA...8t9181L. doi:10.1109/ACCESS.2020.3038496. ISSN 2169-3536. Kochanski, Martin (2003-08-19). "A New Method
Carry-save_adder
server sends an error packet if a request is invalid. Since requests are queued, error packets generated by a request may not be sent immediately. Request
X_Window_System_core_protocol
as an 'alternate usage assignment' but establishes this as the preferred method and calls for transition away from port 587 and STARTTLS. Deployment typically
List of TCP and UDP port numbers
List_of_TCP_and_UDP_port_numbers
Data storage technology
"Parity Spreading to Enhance Storage Access", issued 1988-08-02 US patent 4899342, David Potter et al., "Method and Apparatus for Operating Multi-Unit
RAID
2007 video game
an artificial intelligence, about upcoming tests. Chell enters into sequential distinct chambers that introduce her to varying challenges to solve using
Portal_(video_game)
costs and the expected price for the product. Sequential search Unlike nonsequential-search, sequential buyers opt to buy at the lowest price found thus
Search_cost
General-purpose programming language
may be called and variables assigned new values. To modify the normal sequential execution of statements, C provides several control-flow statements identified
C_(programming_language)
Operating system
file management package which provides support for key indexed files, sequential files, and relative record files. DNOS is a multiterminal system that
TI-DNOS
General-purpose programming language
external access to public fields always goes through accessor (getter) and mutator (setter) methods, which are automatically created. The accessor function
Scala_(programming_language)
Methods of delivering voice communications and multimedia over IP networks
undesirable loss of VoIP packets by immediately transmitting them ahead of any queued bulk traffic on the same link, even when the link is congested by bulk traffic
Voice_over_IP
Representation of the control state of a computer program
denotational semantics that makes extensive use of continuations to allow sequential programs to be analysed in terms of functional programming semantics.
Continuation
Microsoft database tool
to do in the case damage or of failure. These steps can be executed sequentially or in parallel. Packages can also contain global variables which can
Data_Transformation_Services
QUEUED SEQUENTIAL-ACCESS-METHOD
QUEUED SEQUENTIAL-ACCESS-METHOD
Girl/Female
Australian, Greek
Chaste; Pure
Surname or Lastname
English and Irish
English and Irish : variant spelling of Akers.
Surname or Lastname
English
English : variant of Akers.Altered form of Acker.
Girl/Female
German
Noble; Kind
Female
English
English name derived from the vocabulary word, queen, from Old English cwen "queen," from Germanic kwen, QUEEN means "wife."
Boy/Male
Welsh
Legendary father of Tringad.
Boy/Male
Latin
A Roman poet.
Girl/Female
Indian, Modern
Queen
Girl/Female
Australian, French
Tender Touch; Beloved
Girl/Female
Greek Latin
Chaste.
Male
Egyptian
, lord, prince?
Surname or Lastname
English
English : variant of Carras.
Surname or Lastname
English
English : variant of Harness.
Surname or Lastname
English (Gloucestershire)
English (Gloucestershire) : unexplained.
Girl/Female
Welsh
Legendary daughter of KyvwIch.
Girl/Female
Australian, British, English, Teutonic
Queen
Surname or Lastname
Scottish
Scottish : reduced form of McQueen.English : from a Middle English female personal name, Quena, from Old English cwene ‘queen’.
Boy/Male
American, Australian, British, English
Camp of the Soldiers
Girl/Female
French
Tender touch.
Surname or Lastname
English
English : variant spelling of Annis.
QUEUED SEQUENTIAL-ACCESS-METHOD
QUEUED SEQUENTIAL-ACCESS-METHOD
Boy/Male
Indian
Divine of Power
Girl/Female
Hindu, Indian, Marathi
Prayer
Girl/Female
Hindu, Indian
Unparalleled Kindness; Extremely Good Looking
Female
Italian
Feminine form of Italian Colombano, COLOMBINA means "dove."
Biblical
the people sitting; or captivity of the people
Girl/Female
Indian
Above everybody
Surname or Lastname
English
English : probably a habitational name from any of several places named Kingsmoor or King’s Moor, in Somerset, Sussex, and Essex.
Boy/Male
Hindu, Indian
Lamp
Boy/Male
Muslim
To accomplish
Girl/Female
Hindu
Another name for Goddess Durga
QUEUED SEQUENTIAL-ACCESS-METHOD
QUEUED SEQUENTIAL-ACCESS-METHOD
QUEUED SEQUENTIAL-ACCESS-METHOD
QUEUED SEQUENTIAL-ACCESS-METHOD
QUEUED SEQUENTIAL-ACCESS-METHOD
adv.
In a sentential manner.
n.
A woman who is the sovereign of a kingdom; a female monarch; as, Elizabeth, queen of England; Mary, queen of Scots.
a.
Comprising or representing sentences; sentential.
a.
Succeeding or following in order.
v. t.
To fasten, as hair, in a queue.
n.
A coming to, or near approach; admittance; admission; accessibility; as, to gain access to a prince.
a.
Comprising sentences; as, a sentential translation.
a.
Mysterious; suspicious; questionable; as, a queer transaction.
imp. & p. p.
of Queen
n.
A second access or approach; a return.
v. t.
To express the accent of (either by the voice or by a mark); to utter or to mark with accent.
n.
Increase by something added; addition; as, an access of territory. [In this sense accession is more generally used.]
n.
The means, place, or way by which a thing may be approached; passage way; as, the access is by a neck of land.
n.
A playing card bearing the picture of a queen; as, the queen of spades.
v. i.
To make a queen (or other piece, at the player's discretion) of by moving it to the eighth row; as, to queen a pawn.
n.
A paroxysm; a fit of passion; an outburst; as, an access of fury.
v. t.
To make a recess in; as, to recess a wall.
a.
Of or pertaining to a sentence, or full period; as, a sentential pause.
v. i.
To act the part of a queen.