Joins and subqueries
... statements The subquery introduced with IN or NOT IN returns zero or more values The subquery used with the EXISTS clause returns data in terms of TRUE or FALSE SQL/Lesson 4/Slide 38 of 45 ...
... statements The subquery introduced with IN or NOT IN returns zero or more values The subquery used with the EXISTS clause returns data in terms of TRUE or FALSE SQL/Lesson 4/Slide 38 of 45 ...
F1: A Distributed SQL Database That Scales
... Traian Stancescu Himani Apte Google, Inc. *University of Wisconsin-Madison ...
... Traian Stancescu Himani Apte Google, Inc. *University of Wisconsin-Madison ...
The Relational Data Model and Relational Database Constraints
... recognize that the name change can occur regardless of whether it is due to marriage, or a consequence of a religious and/or spiritual conversion, or for any other reason.] c. The challenge of choosing an invariant primary key from the natural data items leads to the concept of generated keys, also ...
... recognize that the name change can occur regardless of whether it is due to marriage, or a consequence of a religious and/or spiritual conversion, or for any other reason.] c. The challenge of choosing an invariant primary key from the natural data items leads to the concept of generated keys, also ...
Introduction to Database
... DBMS, operating system, network software (if necessary) and also the application programs. ...
... DBMS, operating system, network software (if necessary) and also the application programs. ...
performance tips for batch jobs
... eliminate the 24-minute disk-access time. Total runtime: 16 minutes. Option 5: We eliminate the Sql*Net roundtrips, but we still must account for the disk access time of 16 minutes. The key here is that we spread this time over the 10 threads. Of course, the time will not go down linearly to 1.6 min ...
... eliminate the 24-minute disk-access time. Total runtime: 16 minutes. Option 5: We eliminate the Sql*Net roundtrips, but we still must account for the disk access time of 16 minutes. The key here is that we spread this time over the 10 threads. Of course, the time will not go down linearly to 1.6 min ...
Challenges in Natural Language Processing:
... Key aspects of how to develop the conceptual/logical design of relational databases. In particular, how to achieve certain types of good structuring, to help achieve certain types of correctness and efficiency. How to create and query databases using a particular database language, PostgreSQL ...
... Key aspects of how to develop the conceptual/logical design of relational databases. In particular, how to achieve certain types of good structuring, to help achieve certain types of correctness and efficiency. How to create and query databases using a particular database language, PostgreSQL ...
the Pipeline Manual here
... end data, and contains all of the forms, queries, reports and code that run the database. Many functions rely on using Microsoft Outlook to send email and to set appointments in the Calendar. Outlook Express (Windows XP) and Windows Mail (Vista) do not provide the required functionality. You need to ...
... end data, and contains all of the forms, queries, reports and code that run the database. Many functions rely on using Microsoft Outlook to send email and to set appointments in the Calendar. Outlook Express (Windows XP) and Windows Mail (Vista) do not provide the required functionality. You need to ...
Table of Contents 1. Technology news and Security updates: 1.1
... LAN Manager (NTLMv2) password hash. That leaves victims open to a variety of attacks including a Server Message Block (SMB) relay attack. A SMB relay attack allows an adversary to use a victim’s credentials to authenticate to a PC or network resource such as email or remote server. Attacks could als ...
... LAN Manager (NTLMv2) password hash. That leaves victims open to a variety of attacks including a Server Message Block (SMB) relay attack. A SMB relay attack allows an adversary to use a victim’s credentials to authenticate to a PC or network resource such as email or remote server. Attacks could als ...
Knowledge management systems
... improve per formance. As organizations create and store more data in digital form, they can collect more accurate and detailed per formance data (in real or near -real time) on ever ything from product inventories to per sonnel sick days. IT enables organizations to set up controlled experiments. Fo ...
... improve per formance. As organizations create and store more data in digital form, they can collect more accurate and detailed per formance data (in real or near -real time) on ever ything from product inventories to per sonnel sick days. IT enables organizations to set up controlled experiments. Fo ...
6.11 Platform Support
... as Versant and Poet. These OODBMS were defined as Database Management Systems (DBMS), which supported advanced characteristics such as version support and had a Data Definition Language/Data Manipulation Language that was object orientated and computationally complete. Since the late 1990s Versant h ...
... as Versant and Poet. These OODBMS were defined as Database Management Systems (DBMS), which supported advanced characteristics such as version support and had a Data Definition Language/Data Manipulation Language that was object orientated and computationally complete. Since the late 1990s Versant h ...
Super database computers : hardware and software
... of the database are to be processed in a page-(index-)serial-and-partition-parallel fashion, so that a large number of smaller pages of meta data can be accessed quickly. For the base data of the database, the attribute-value sets (conventionally called records or tuples) may have to be clustered on ...
... of the database are to be processed in a page-(index-)serial-and-partition-parallel fashion, so that a large number of smaller pages of meta data can be accessed quickly. For the base data of the database, the attribute-value sets (conventionally called records or tuples) may have to be clustered on ...
♦ Sunrise: A Real-Time Event-Processing System and Avi Silberschatz
... performance benefits of custom databases and the flexibility and maintainability of conventional database systems. On the one hand, the critical path for event processing within Sunrise has been specifically adapted to achieve high performance—even at the expense of functionality—if that functional ...
... performance benefits of custom databases and the flexibility and maintainability of conventional database systems. On the one hand, the critical path for event processing within Sunrise has been specifically adapted to achieve high performance—even at the expense of functionality—if that functional ...
Agent Foundations for Cooperative Information Systems
... autonomous, often legacy-based components. In cooperative information systems, software agents are introduced into such environments to deal with these characteristics. The agents represent the components in interactions, where they mediate differences and provide a syntactically uniform and semanti ...
... autonomous, often legacy-based components. In cooperative information systems, software agents are introduced into such environments to deal with these characteristics. The agents represent the components in interactions, where they mediate differences and provide a syntactically uniform and semanti ...
From Data Integration to Semantic Mediation
... – Given: data sources S1, ..., Sk (DBMS, web sites, ...) and user questions Q1,..., Qn that can be answered using the Si – Find: the answers to Q1, ..., Qn ...
... – Given: data sources S1, ..., Sk (DBMS, web sites, ...) and user questions Q1,..., Qn that can be answered using the Si – Find: the answers to Q1, ..., Qn ...
Transaction Management and Concurrency Control
... T101 consists of 2 UPDATE statements that reduce the QOH for product 54778-2T and increase the customer balance for customer 10011 for a credit sale of 2 units of that product T106 represents a credit sale of 1 unit of 89-WREQ to customer 10016 for $277.55 This transaction consists of 3 INSERT a ...
... T101 consists of 2 UPDATE statements that reduce the QOH for product 54778-2T and increase the customer balance for customer 10011 for a credit sale of 2 units of that product T106 represents a credit sale of 1 unit of 89-WREQ to customer 10016 for $277.55 This transaction consists of 3 INSERT a ...
literature survey
... Robustness-based: Another type of post-retrieval methods argue that the results of an easy query are relatively stable against the queries, documents or ranking algorithms. Some methods use machine learning techniques to study the properties and predict their hardness. They have same limitations as ...
... Robustness-based: Another type of post-retrieval methods argue that the results of an easy query are relatively stable against the queries, documents or ranking algorithms. Some methods use machine learning techniques to study the properties and predict their hardness. They have same limitations as ...
What is Data Warehouse?
... Indenting entities from the given set of business environments.eg: customers, orders identifying how specific instants of each entity are different from other instances like logical keys.eg Customer’s_id, order_number Grouping the different attribute that refers to same entity Finally documenting or ...
... Indenting entities from the given set of business environments.eg: customers, orders identifying how specific instants of each entity are different from other instances like logical keys.eg Customer’s_id, order_number Grouping the different attribute that refers to same entity Finally documenting or ...
Oracle Database Security FY11 6/1/2010
... • Efficient, tamper-resistant storage of archives in the database • Real-time access to historical application data using SQL • Simplified incident forensics and recovery ...
... • Efficient, tamper-resistant storage of archives in the database • Real-time access to historical application data using SQL • Simplified incident forensics and recovery ...
business intelligence and data warehouse programs in higher
... The data warehousing skill set includes the foundation of relational database knowledge, though sometimes this information may not be explicitly stated in a job description. One characteristic of this group of skills is a requirement for experience with specific software products for data warehouse ...
... The data warehousing skill set includes the foundation of relational database knowledge, though sometimes this information may not be explicitly stated in a job description. One characteristic of this group of skills is a requirement for experience with specific software products for data warehouse ...
An Intelligent Decision Support System in Construction
... event, etc. Apart from the data model design, several other necessary steps include: (1) data extraction from the source systems, databases and files; (2) data integration with the source systems; (3) data loading into the data warehouse; (4) data transformation into the format of the front-end tool ...
... event, etc. Apart from the data model design, several other necessary steps include: (1) data extraction from the source systems, databases and files; (2) data integration with the source systems; (3) data loading into the data warehouse; (4) data transformation into the format of the front-end tool ...
Translation of the data flow query language Free, Nancy C.
... 1. Motivation for a Multi-lingual Database System (MLDS) Since the evolution of the database management system (DBMS), design and ...
... 1. Motivation for a Multi-lingual Database System (MLDS) Since the evolution of the database management system (DBMS), design and ...
Normalization
... A workshop for everybody! The days of CODASYL (Conference on Data System Languages) – This organization started as a mechanism to standardize programming languages. 1965 – List Processing Task Force 1967 – Renamed Data Base Task Group During this time, hardware and software are closely linked, and b ...
... A workshop for everybody! The days of CODASYL (Conference on Data System Languages) – This organization started as a mechanism to standardize programming languages. 1965 – List Processing Task Force 1967 – Renamed Data Base Task Group During this time, hardware and software are closely linked, and b ...
raju-ordbms2
... ADTs – user defined arbitrary data types is a key feature of ORDBMS ADTs are a combination of atomic data types and associated methods DBMS doesn’t need to know about how ADT’s are stored or their methods work? It just has to know about ADT’s signature Hiding ADT internals is called encapsulation ...
... ADTs – user defined arbitrary data types is a key feature of ORDBMS ADTs are a combination of atomic data types and associated methods DBMS doesn’t need to know about how ADT’s are stored or their methods work? It just has to know about ADT’s signature Hiding ADT internals is called encapsulation ...
white paper a comparison between relational and
... increases the number of items in stock, it is clear from the above declaration that items_in_stock belongs to the Item class. However, this detail is hidden from other classes which use Item. Because number_in_stock is private it can not be accessed directly except in the functions belonging to the ...
... increases the number of items in stock, it is clear from the above declaration that items_in_stock belongs to the Item class. However, this detail is hidden from other classes which use Item. Because number_in_stock is private it can not be accessed directly except in the functions belonging to the ...