The Vertica Analytic Database: C-Store 7 Years Later
... Vertica is a distributed system designed for modern commodity hardware. In 2012, this means x86 64 servers, Linux and commodity gigabit Ethernet interconnects. Like CStore, Vertica is designed from the ground up to be a distributed database. When nodes are added to the database, the system’s perform ...
... Vertica is a distributed system designed for modern commodity hardware. In 2012, this means x86 64 servers, Linux and commodity gigabit Ethernet interconnects. Like CStore, Vertica is designed from the ground up to be a distributed database. When nodes are added to the database, the system’s perform ...
Highly Available Transactions: Virtues and
... However, even in a single-node database, the coordination penalties associated with serializability can be severe and are manifested in the form of decreased concurrency (and, subsequently, performance degradation, scalability limitations, and, often, aborts due to deadlock or contention) [38]. Acco ...
... However, even in a single-node database, the coordination penalties associated with serializability can be severe and are manifested in the form of decreased concurrency (and, subsequently, performance degradation, scalability limitations, and, often, aborts due to deadlock or contention) [38]. Acco ...
Navigating in the Storm: Using Astrolabe for Distributed Self-Configuration, Monitoring and Adaptation
... root of this hierarchy. As just explained, the system maintains the abstraction of a hierarchical relational database. Physically, however, this hierarchy is an illusion, constructed using a peer-to-peer protocol, somewhat like a jig-saw puzzle in which each computer has ownership of one piece and r ...
... root of this hierarchy. As just explained, the system maintains the abstraction of a hierarchical relational database. Physically, however, this hierarchy is an illusion, constructed using a peer-to-peer protocol, somewhat like a jig-saw puzzle in which each computer has ownership of one piece and r ...
A Technique for Importing External Data into a Relational Database Using PROC SQL, the Pass-Through Facility and the Macro Language
... recommended to me and I left it as is because of the "if it ain't broke, don't fix it" adage. You could have easily left out line 94 which assigns a value to the FLAG variable if a SQL return code is returned and in line 95, replaced the "&flag" with "&sqlxrc" and it will work just the same. The mai ...
... recommended to me and I left it as is because of the "if it ain't broke, don't fix it" adage. You could have easily left out line 94 which assigns a value to the FLAG variable if a SQL return code is returned and in line 95, replaced the "&flag" with "&sqlxrc" and it will work just the same. The mai ...
Some Thoughts on Data Warehouses
... It is normal for organisations to have multiple ‘business’ systems which were developed at different time periods and on different computers and with different applications software platforms To integrate these requires much skill at the communications and applications levels. XML is the current ‘ho ...
... It is normal for organisations to have multiple ‘business’ systems which were developed at different time periods and on different computers and with different applications software platforms To integrate these requires much skill at the communications and applications levels. XML is the current ‘ho ...
Microsoft Office Access - MSC
... Meeting the Varied Database Needs of an Organization Relational database technology has had an immense impact on business in the few decades since it was first developed. The vast majority of business transactions are now recorded, tracked, and analyzed using data stored in relational systems. Howe ...
... Meeting the Varied Database Needs of an Organization Relational database technology has had an immense impact on business in the few decades since it was first developed. The vast majority of business transactions are now recorded, tracked, and analyzed using data stored in relational systems. Howe ...
ECDL / ICDL Using Databases Level 1 Syllabus Version 1.0 (UK)
... damage whatsoever arising by virtue of such information or any instructions or advice contained within this publication. Changes may be made by ECDL Foundation at its own discretion and at any time without notice. Mapping to the IT User Qualifications (ITQ) This syllabus, for use in the United Kingd ...
... damage whatsoever arising by virtue of such information or any instructions or advice contained within this publication. Changes may be made by ECDL Foundation at its own discretion and at any time without notice. Mapping to the IT User Qualifications (ITQ) This syllabus, for use in the United Kingd ...
Dynamic load balancing in parallel database systems
... IBM's database systems (IMS, DB2) for parallel sysplex configurations. Oracle Parallel Server is available on many platforms, in particular on parallel computers (e.g., nCUBE) as well as on most "cluster" architectures (VaxCluster, Sequent, Pyramid, Encore, Sun, etc.). SE systems have the advantage ...
... IBM's database systems (IMS, DB2) for parallel sysplex configurations. Oracle Parallel Server is available on many platforms, in particular on parallel computers (e.g., nCUBE) as well as on most "cluster" architectures (VaxCluster, Sequent, Pyramid, Encore, Sun, etc.). SE systems have the advantage ...
2800 Woods Hollow Rd
... function whenever it's needed, instead, call the LEN function once, and store the result in a variable, for later use. ...
... function whenever it's needed, instead, call the LEN function once, and store the result in a variable, for later use. ...
What Is a Transaction?
... All portions of the transaction must be applied and completed to produce a consistent database. If, for some reason, any transaction operation cannot be completed, the transaction must be aborted, and any changes to the database must be rolled back. ...
... All portions of the transaction must be applied and completed to produce a consistent database. If, for some reason, any transaction operation cannot be completed, the transaction must be aborted, and any changes to the database must be rolled back. ...
cos346day21
... Application Roles • These roles are used to allocate specific permissions for specific applications such as payroll or inventory management. • Application roles are allocated to login sessions. • Application roles require a password. • While connected to an application role, the database user loses ...
... Application Roles • These roles are used to allocate specific permissions for specific applications such as payroll or inventory management. • Application roles are allocated to login sessions. • Application roles require a password. • While connected to an application role, the database user loses ...
Cloud Management Pack for Oracle Database: Feature Overview.
... Supports 1 to 1000s of clones Protects your existing investments Choice between hardware and software solution Use of trusted technologies like data guard for test master refresh ...
... Supports 1 to 1000s of clones Protects your existing investments Choice between hardware and software solution Use of trusted technologies like data guard for test master refresh ...
Towards heterogeneous multimedia information systems: the Garlic
... such media-specific data systems include image management systems (e.g., QBIC [ 11, Excalibur [8], and Photobook[2]), information retrieval systems for text (e.g., [3], [4],[5], [6] and [7]), and video servers (e.g., MediaServer [9] and Shark [lo]). This increased heterogeneity of systems and data t ...
... such media-specific data systems include image management systems (e.g., QBIC [ 11, Excalibur [8], and Photobook[2]), information retrieval systems for text (e.g., [3], [4],[5], [6] and [7]), and video servers (e.g., MediaServer [9] and Shark [lo]). This increased heterogeneity of systems and data t ...
Databases - Entity-Relationship Modelling Database Design
... We deliberately use this very simple form of ER diagramming because the constraints that are used in this model can all be implemented in standard SQL, and thus the database model corresponds precisely to the ER diagram. ...
... We deliberately use this very simple form of ER diagramming because the constraints that are used in this model can all be implemented in standard SQL, and thus the database model corresponds precisely to the ER diagram. ...
Structured Query Language (SQL)
... The Relational Model The relational model was developed by E F Codd at the IBM San Jose Research Laboratory in the late 1960s. This work being published in 1970 under the title: "A Relational Model of Data For Large Shared Data Banks". In this paper Codd defines the relational model and its capabili ...
... The Relational Model The relational model was developed by E F Codd at the IBM San Jose Research Laboratory in the late 1960s. This work being published in 1970 under the title: "A Relational Model of Data For Large Shared Data Banks". In this paper Codd defines the relational model and its capabili ...
Module 1 - Faculty Websites
... • Including the primary key from one table as a field in a second table to form a relationship between the two tables, it is called a foreign key in the second table ...
... • Including the primary key from one table as a field in a second table to form a relationship between the two tables, it is called a foreign key in the second table ...
Consolidation Best Practices: Oracle Database 12c plugs you into
... By consolidating your standardized database services onto a shared environment, you can further improve utilization and also significantly reduce management costs by reducing the number of distinct environments that you have to manage. This lowers both capital and operational expenditures. Lower pow ...
... By consolidating your standardized database services onto a shared environment, you can further improve utilization and also significantly reduce management costs by reducing the number of distinct environments that you have to manage. This lowers both capital and operational expenditures. Lower pow ...
Chapter 15
... reads of same record must return same value. However, a transaction may not be serializable – it may find some records inserted by a transaction but not find others. Read committed — only committed records can be read, but ...
... reads of same record must return same value. However, a transaction may not be serializable – it may find some records inserted by a transaction but not find others. Read committed — only committed records can be read, but ...
Chapter 3 - Personal Web Pages
... A set of fields is a key for a relation if : 1. No two distinct tuples can have same values in all key fields, and 2. This is not true for any subset of the key. – Part 2 false? A superkey. – If there’s >1 key for a relation, one of the keys is chosen (by DBA) to be the primary key. ...
... A set of fields is a key for a relation if : 1. No two distinct tuples can have same values in all key fields, and 2. This is not true for any subset of the key. – Part 2 false? A superkey. – If there’s >1 key for a relation, one of the keys is chosen (by DBA) to be the primary key. ...
Sample Profile Providers
... requires that this attribute contain two pieces of information separated by a semi-colon: the database column name and the ADO.NET database type. The sample Profile property configuration shown above defines the following behavior when used with the SqlTableProfileProvider. 1. The FirstName Profile ...
... requires that this attribute contain two pieces of information separated by a semi-colon: the database column name and the ADO.NET database type. The sample Profile property configuration shown above defines the following behavior when used with the SqlTableProfileProvider. 1. The FirstName Profile ...
Development - Downloads
... The following is intended to outline Oracle’s general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. ...
... The following is intended to outline Oracle’s general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. ...
RelatonalAlgebra
... The relational model has rigorously defined query languages that are simple and powerful Relational algebra is operational; useful as internal representation for query evaluation plans Projection, selection, cross-product, difference and union are the minimal set of operators with which all oper ...
... The relational model has rigorously defined query languages that are simple and powerful Relational algebra is operational; useful as internal representation for query evaluation plans Projection, selection, cross-product, difference and union are the minimal set of operators with which all oper ...
Chapter 21:Application Development and Administration
... introduces the theory of relational-database design. The theory of functional dependencies and normalization is covered, with emphasis on the motivation and intuitive understanding of each normal form. Instructors may chose to use only this initial coverage in Sections 7.1 through 7.3 without loss o ...
... introduces the theory of relational-database design. The theory of functional dependencies and normalization is covered, with emphasis on the motivation and intuitive understanding of each normal form. Instructors may chose to use only this initial coverage in Sections 7.1 through 7.3 without loss o ...
MySQL CLUSTER
... If your workloads have these demands, it is time to consider MySQL Cluster. MySQL Cluster is a highly scalable, real-time, ACID-compliant transactional database, combining 99.999% availability with the low TCO of open source. Designed around a distributed architecture with no single point of failure ...
... If your workloads have these demands, it is time to consider MySQL Cluster. MySQL Cluster is a highly scalable, real-time, ACID-compliant transactional database, combining 99.999% availability with the low TCO of open source. Designed around a distributed architecture with no single point of failure ...