PowerPoint Chapter 12
... • Distributed databases make it possible for transaction to access data at several sites • Final COMMIT must not be issued until all sites have committed their parts of transaction • Two-phase commit protocol requires each individual DP’s transaction log entry be written before database fragment is ...
... • Distributed databases make it possible for transaction to access data at several sites • Final COMMIT must not be issued until all sites have committed their parts of transaction • Two-phase commit protocol requires each individual DP’s transaction log entry be written before database fragment is ...
Metadata Repository Design Concepts
... Regardless of whether metadata is automatically refreshed or manually tracked, the application of the globally unique BaseID allows any item to relate to any other. Consider the example of a Data Definition, which records a strategically-valuable informational element and instructions on how to deri ...
... Regardless of whether metadata is automatically refreshed or manually tracked, the application of the globally unique BaseID allows any item to relate to any other. Consider the example of a Data Definition, which records a strategically-valuable informational element and instructions on how to deri ...
Middleware non-repudiation service for the data warehouse 1
... one can emphasise information security issues. This aspect is especially important because in many cases protecting information which is stored in databases is crucial for companies. The security of the data repository must meet three main security requirements [7]: confidentiality, integrity and ava ...
... one can emphasise information security issues. This aspect is especially important because in many cases protecting information which is stored in databases is crucial for companies. The security of the data repository must meet three main security requirements [7]: confidentiality, integrity and ava ...
Accessing Btrieve Data From ODBC or Other
... easily report on data and maintain your database, it can also be used to quickly erase data. All of it. At once. Without a backup. Bye bye. You're fired. You'll lose your house. Your dog will leave you. Etc. Pervasive Software is NOT responsible for anything you do. Goldstar Software is NOT responsi ...
... easily report on data and maintain your database, it can also be used to quickly erase data. All of it. At once. Without a backup. Bye bye. You're fired. You'll lose your house. Your dog will leave you. Etc. Pervasive Software is NOT responsible for anything you do. Goldstar Software is NOT responsi ...
SQL 1 - New Paltz
... • In SQL we use NOT EXISTS • Rewrite the query in English with NOT EXISTS Find the cardholders where there does NOT EXIST a book published by Addison-Wesley that they did not reserve. Find the cardholders where there does NOT EXIST a book published by Addison-Wesley and that book is NOT IN the set o ...
... • In SQL we use NOT EXISTS • Rewrite the query in English with NOT EXISTS Find the cardholders where there does NOT EXIST a book published by Addison-Wesley that they did not reserve. Find the cardholders where there does NOT EXIST a book published by Addison-Wesley and that book is NOT IN the set o ...
Microsoft Azure in the Enterprise
... Get full control over a server in the cloud and maintain it as your business requires. ...
... Get full control over a server in the cloud and maintain it as your business requires. ...
Python: Strings - CS-People by full name
... >>> db.rollback() • to make permanent all changes made during a transaction: >>> db.commit() • committing or rolling back a transaction begins a new one • If an error occurs when executing a command, you need to rollback the current transaction before issuing other commands. ...
... >>> db.rollback() • to make permanent all changes made during a transaction: >>> db.commit() • committing or rolling back a transaction begins a new one • If an error occurs when executing a command, you need to rollback the current transaction before issuing other commands. ...
PYTHIA-II: A Knowledge/Database System for Managing
... Complex scientific, engineering, or societal problems are often solved today by utilizing libraries or some form of problem-solving environments (PSEs). Most software modules are characterized by a significant number of parameters affecting efficiency and applicability that must be specified by the ...
... Complex scientific, engineering, or societal problems are often solved today by utilizing libraries or some form of problem-solving environments (PSEs). Most software modules are characterized by a significant number of parameters affecting efficiency and applicability that must be specified by the ...
Data-Access-with
... and Groups(group_id, group_name) along with sequences fro populating their primary keys. Write classes User and Group that correspond to these tables. Write methods for adding new users and groups. Write methods for listing all groups, all users and all users by given group. Write methods for updati ...
... and Groups(group_id, group_name) along with sequences fro populating their primary keys. Write classes User and Group that correspond to these tables. Write methods for adding new users and groups. Write methods for listing all groups, all users and all users by given group. Write methods for updati ...
Slides from Lecture 20 - Courses - University of California, Berkeley
... Non-Atomic Values - Arrays • The preceding SQL command will create a class named SAL_EMP with a text string (name), a one-dimensional array of int4 (pay_by_quarter), which represents the employee's salary by quarter and a two-dimensional array of text (schedule), which represents the employee's ...
... Non-Atomic Values - Arrays • The preceding SQL command will create a class named SAL_EMP with a text string (name), a one-dimensional array of int4 (pay_by_quarter), which represents the employee's salary by quarter and a two-dimensional array of text (schedule), which represents the employee's ...
DB2 Java Performance with pureQuery and Data Studio
... many different fashions to match whatever application requirements are necessary. Using inLine statements, Java methods, object relational mapping, or named queries pureQuery offers the java programmer the flexibility to match their coding style with the application requirements. In addition, pureQu ...
... many different fashions to match whatever application requirements are necessary. Using inLine statements, Java methods, object relational mapping, or named queries pureQuery offers the java programmer the flexibility to match their coding style with the application requirements. In addition, pureQu ...
Grid Computing Meets the Database
... Arrival of market data in flat-file format Completion of a stored procedure which collects location brokerage data ...
... Arrival of market data in flat-file format Completion of a stored procedure which collects location brokerage data ...
Database Management Systems
... a. R is defined as a set of tuples b. Tuples in R do not have any particular order c. In file, records are physically stored on disk so there is an order among the records d. Many logical models can bed used to sort records in R using SSN, name, age 2. Ordering of values within a tuple a. At logical ...
... a. R is defined as a set of tuples b. Tuples in R do not have any particular order c. In file, records are physically stored on disk so there is an order among the records d. Many logical models can bed used to sort records in R using SSN, name, age 2. Ordering of values within a tuple a. At logical ...
Client/Server and Middleware
... All processing is done at the PC that requested the data FAT CLIENT Entire files are transferred from the server to the client for processing. Problems: – Huge amount of data transfer on the network – Each client must contain full DBMS ...
... All processing is done at the PC that requested the data FAT CLIENT Entire files are transferred from the server to the client for processing. Problems: – Huge amount of data transfer on the network – Each client must contain full DBMS ...
Innovation, Implementation, and Integration: Building a DataWarehouse with SAS® Data Integration Studio and MS SQL Server
... should be able to supply the users with data for reports and analysis in a wide range of tools and applications. To ensure this we began considering how to support scalability in our implementation. Basically there are two ways of scaling: scale up or scale out. Scaling up means buying a server with ...
... should be able to supply the users with data for reports and analysis in a wide range of tools and applications. To ensure this we began considering how to support scalability in our implementation. Basically there are two ways of scaling: scale up or scale out. Scaling up means buying a server with ...
doc - itk.ilstu.edu
... regardless of the model employed or the platform upon which they exist. This access is generally accomplished through a single common interface such as ODBC or JDBC. Because of this, information stored in Oracle, Informix, or DB2 databases can be accessed at the same time through a single interface. ...
... regardless of the model employed or the platform upon which they exist. This access is generally accomplished through a single common interface such as ODBC or JDBC. Because of this, information stored in Oracle, Informix, or DB2 databases can be accessed at the same time through a single interface. ...
Document
... – Foreign keys that are based on surrogate keys have no meaning to the users – When data shared among different databases contain the same ID, merging those tables might yield unexpected results Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroenke ...
... – Foreign keys that are based on surrogate keys have no meaning to the users – When data shared among different databases contain the same ID, merging those tables might yield unexpected results Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroenke ...
foreign key
... • An entity is something of importance to a user that needs to be represented in a database • An entity represents one theme or topic • In an entity-relationship model (discussed in Chapter 4), entities are restricted to things that can be represented by a single table KROENKE and AUER - DATABASE CO ...
... • An entity is something of importance to a user that needs to be represented in a database • An entity represents one theme or topic • In an entity-relationship model (discussed in Chapter 4), entities are restricted to things that can be represented by a single table KROENKE and AUER - DATABASE CO ...
Discoverer Desktop 4i Power Point
... Sharing a workbook grants other people access to it to view, analyze, and print the data. You can share workbooks with other people by setting up sharing two ways: Assign a group of people who can share one of your workbooks. Assign one or more workbooks that one other person can share with you. ...
... Sharing a workbook grants other people access to it to view, analyze, and print the data. You can share workbooks with other people by setting up sharing two ways: Assign a group of people who can share one of your workbooks. Assign one or more workbooks that one other person can share with you. ...
grant
... without being given any authorization on the relations used in the view definition • Ability of views to hide data serves both to simplify usage of the system and to enhance security by allowing users access only to data they need for their job • A combination of relation-level security and view-lev ...
... without being given any authorization on the relations used in the view definition • Ability of views to hide data serves both to simplify usage of the system and to enhance security by allowing users access only to data they need for their job • A combination of relation-level security and view-lev ...
PPTX
... • We perform an exploratory study to observe frequently occurring phenomena within the scope of the aforementioned population • Are our data sets representative enough? Is it possible that the observed behaviors are caused by sui-generis characteristics of the studied data sets? – Yes: we believe we ...
... • We perform an exploratory study to observe frequently occurring phenomena within the scope of the aforementioned population • Are our data sets representative enough? Is it possible that the observed behaviors are caused by sui-generis characteristics of the studied data sets? – Yes: we believe we ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.