Mapping RDF and RDF-Schema to the Entity Relationship Model
... given that RDF and relational models have differing architectures, there is a significant challenge in storing RDF in the relational model [9, 24]. In order to bridge this gap in architectures, in this paper we look at a mapping of RDF to a data modeling visualization paradigm, the Entity Relationsh ...
... given that RDF and relational models have differing architectures, there is a significant challenge in storing RDF in the relational model [9, 24]. In order to bridge this gap in architectures, in this paper we look at a mapping of RDF to a data modeling visualization paradigm, the Entity Relationsh ...
Scripting Guide
... Portions of this software copyright © 1995-2002 Jean-loup Gailly and Mark Adler This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this s ...
... Portions of this software copyright © 1995-2002 Jean-loup Gailly and Mark Adler This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this s ...
l DBMS-II Lab Manual
... Use the CREATE TABLE statement to create one of the following types of tables: A relational table, which is the basic structure to hold user data. An object table, which is a table that uses an object type for a column definition. An object table is explicitly defined to hold object instances of a p ...
... Use the CREATE TABLE statement to create one of the following types of tables: A relational table, which is the basic structure to hold user data. An object table, which is a table that uses an object type for a column definition. An object table is explicitly defined to hold object instances of a p ...
Select
... Flora Flora EE CSIT Computational Science and Information Technology Fulay Fulay CS CSIT Computational Science and Information Technology ...
... Flora Flora EE CSIT Computational Science and Information Technology Fulay Fulay CS CSIT Computational Science and Information Technology ...
The SQL SELECT Statement
... The TOP clause is used to specify the number of records to return. The TOP clause can be very useful on large tables with thousands of records. Returning a large number of records can impact on performance. Note: Not all database systems support the TOP clause. ...
... The TOP clause is used to specify the number of records to return. The TOP clause can be very useful on large tables with thousands of records. Returning a large number of records can impact on performance. Note: Not all database systems support the TOP clause. ...
Storing XML using Relational Model
... Traditional relational databases are typically better at dealing with data centric requirements. (2) ...
... Traditional relational databases are typically better at dealing with data centric requirements. (2) ...
Ajax and DB
... Escapes special characters in the unescaped_string , taking into account the current character set of the connection so that it is safe to place it in a mysql_query(). If binary data is to be inserted, this function must be used. mysql_real_escape_string() calls MySQL's library function mysql_real_e ...
... Escapes special characters in the unescaped_string , taking into account the current character set of the connection so that it is safe to place it in a mysql_query(). If binary data is to be inserted, this function must be used. mysql_real_escape_string() calls MySQL's library function mysql_real_e ...
lecture 5
... • After you login into SQL*Plus, at the SQL prompt, you can begin typing any SQL command. • Upon hitting return (i.e., enter key) the SQL prompt will change to line number prompts. • When you are finished typing a command, type / or RUN to execute the SQL command. • Also, a semicolon at the end of ...
... • After you login into SQL*Plus, at the SQL prompt, you can begin typing any SQL command. • Upon hitting return (i.e., enter key) the SQL prompt will change to line number prompts. • When you are finished typing a command, type / or RUN to execute the SQL command. • Also, a semicolon at the end of ...
How Much Data
... Database) to create a policy function and apply the policy function to our table, so that it does NOT display certain rows for a given deptno, BUT ONLY when the salary and/or COMM columns are selected. So all rows displayed when I DON'T choose SAL and/or COMM and all rows EXCEPT deptno 10 when I DO ...
... Database) to create a policy function and apply the policy function to our table, so that it does NOT display certain rows for a given deptno, BUT ONLY when the salary and/or COMM columns are selected. So all rows displayed when I DON'T choose SAL and/or COMM and all rows EXCEPT deptno 10 when I DO ...
Referential Integrity in Oracle Rdb
... The user can use the SET ALL CONSTRAINT statement to define the timing (IMMEDIATE, or DEFERRED) as well as force constraint evaluation when SET CONSTRAINT is used. If SET ALL CONSTRAINT IMMEDIATE is used then all subsequent statements will be followed by the evaluation of all active DEFERRABLE const ...
... The user can use the SET ALL CONSTRAINT statement to define the timing (IMMEDIATE, or DEFERRED) as well as force constraint evaluation when SET CONSTRAINT is used. If SET ALL CONSTRAINT IMMEDIATE is used then all subsequent statements will be followed by the evaluation of all active DEFERRABLE const ...
Paper
... The storage of XML can be achieved in three different ways: structure based storing, model based storing and text based storing. a. Structure Based Storing (e.g. STORED, POET): In structure based storing, the database schemas represent the logical structure of the XML document (or DTDs if they are a ...
... The storage of XML can be achieved in three different ways: structure based storing, model based storing and text based storing. a. Structure Based Storing (e.g. STORED, POET): In structure based storing, the database schemas represent the logical structure of the XML document (or DTDs if they are a ...
PlantSuite RDBMS to PI
... multiple records per query while each record can contain data for a different tag. To achieve this, a field must be provided in the query which contains the tagname or the alias tagname. This option is very efficient for getting exception-based data from an RDB table where it is unknown how many dat ...
... multiple records per query while each record can contain data for a different tag. To achieve this, a field must be provided in the query which contains the tagname or the alias tagname. This option is very efficient for getting exception-based data from an RDB table where it is unknown how many dat ...
chapter 1 - Sacramento - California State University
... provides advanced multi user concurrency capabilities by allowing you to lock individual rows rather than entire tables. This engine is recommended where table needs support for the transactions. It is used when we are storing very large amount of data in a tables. The only overhead of this engine i ...
... provides advanced multi user concurrency capabilities by allowing you to lock individual rows rather than entire tables. This engine is recommended where table needs support for the transactions. It is used when we are storing very large amount of data in a tables. The only overhead of this engine i ...
Chapter_5_PL_SQL
... Writing Database Access Program with PL/SQL (Updated on May 16, 2016) [The “class note” is the typical material I would prepare for my face-to-face class. Since this is an Internet based class, I am sharing the notes with everyone assuming you are in the class.] ...
... Writing Database Access Program with PL/SQL (Updated on May 16, 2016) [The “class note” is the typical material I would prepare for my face-to-face class. Since this is an Internet based class, I am sharing the notes with everyone assuming you are in the class.] ...
Query Engine
... A Query Engine separates business logic from technical details on how search requests are ex ecuted. Application developers may concentrate on implementing business requirements without knowing details about the data sources. A Query Engine may provide features that are missing in a specific data s ...
... A Query Engine separates business logic from technical details on how search requests are ex ecuted. Application developers may concentrate on implementing business requirements without knowing details about the data sources. A Query Engine may provide features that are missing in a specific data s ...
Text of Chapter 5
... When a program declares a variable using a datatype that requires a constraint specification (such as VARCHAR2), the declaration must specify the constraint. The body of the example program uses the DBMS_OUTPUT.PUT_LINE procedure to direct output to the standard output. The DBMS_OUTPUT. PUT_LINE pro ...
... When a program declares a variable using a datatype that requires a constraint specification (such as VARCHAR2), the declaration must specify the constraint. The body of the example program uses the DBMS_OUTPUT.PUT_LINE procedure to direct output to the standard output. The DBMS_OUTPUT. PUT_LINE pro ...
Grocery Store Project
... CHECKOUT: This entity type represents an atomic transaction of a customer purchasing items in the store. It relates to STORE via the CHECKOUT LOCATION relationship. It relates to CUSTOMERS via the BUY ITEMS relationship. It relates to the employee who performed the checkout with the EMPLOYEE CHECKOU ...
... CHECKOUT: This entity type represents an atomic transaction of a customer purchasing items in the store. It relates to STORE via the CHECKOUT LOCATION relationship. It relates to CUSTOMERS via the BUY ITEMS relationship. It relates to the employee who performed the checkout with the EMPLOYEE CHECKOU ...
Introduction to Databases
... Foreign keys hold a copy of a primary key in another table. Foreign keys hold a copy of a primary key in the same table. ...
... Foreign keys hold a copy of a primary key in another table. Foreign keys hold a copy of a primary key in the same table. ...
1 Oblivious Bounds on the Probability of Boolean Functions WOLFGANG GATTERBAUER DAN SUCIU
... databases reduces to the problem of computing the probability of its lineage expression which is a a monotone, k-partite Boolean DNF where k is fixed by the number of joins in the query. Computing the probability of the lineage is known to be #P-hard for some queries [Dalvi and Suciu 2007], hence we ...
... databases reduces to the problem of computing the probability of its lineage expression which is a a monotone, k-partite Boolean DNF where k is fixed by the number of joins in the query. Computing the probability of the lineage is known to be #P-hard for some queries [Dalvi and Suciu 2007], hence we ...