Lecture 5 ppt - School of Computer Science
... part of an IBM project in the 70’s • Sequel was already taken, so it became SQL - Structured Query Language ...
... part of an IBM project in the 70’s • Sequel was already taken, so it became SQL - Structured Query Language ...
Conceptual Design Using the ER Model
... Another constraint that cannot be express in SQL is the requirement that each employee must manage at least one department. Such cases requires constraints that involve more than one table. In SQL, this is achieved using Assertions, which are constraints that associated to multiple relations or tabl ...
... Another constraint that cannot be express in SQL is the requirement that each employee must manage at least one department. Such cases requires constraints that involve more than one table. In SQL, this is achieved using Assertions, which are constraints that associated to multiple relations or tabl ...
Backing up of Database using RMAN on ORACLE
... ons, critical database records can be destroyed sometimes as a result of user error or hardware or software failure. The only way to prevent this potentially disastrous situation is to perform regular backup operations. Oracle provides several backup methods and each has its own special feature, whi ...
... ons, critical database records can be destroyed sometimes as a result of user error or hardware or software failure. The only way to prevent this potentially disastrous situation is to perform regular backup operations. Oracle provides several backup methods and each has its own special feature, whi ...
extended version - Department of Computer Science, University of
... A common out-database probability approximation technique exploits decadesold seminal work on Monte Carlo algorithms including Fully Polynomial-Time Randomized Approximation Schemes (FPRAS) for model counting of propositional formulas in disjunctive normal form [23, 35]. MystiQ and MayBMS use adapta ...
... A common out-database probability approximation technique exploits decadesold seminal work on Monte Carlo algorithms including Fully Polynomial-Time Randomized Approximation Schemes (FPRAS) for model counting of propositional formulas in disjunctive normal form [23, 35]. MystiQ and MayBMS use adapta ...
- Courses - University of California, Berkeley
... databases are linked to our CalPhotos collection of Calfornia plants, and are also linked to external collections of data, maps, and photos. ...
... databases are linked to our CalPhotos collection of Calfornia plants, and are also linked to external collections of data, maps, and photos. ...
PL/SQL provides the following statements for transaction management
... "No, no! I meant to delete only the orders before May 1995!" No problemjust issue ROLLBACK. From an application coding standpoint, ROLLBACK is important because it allows you to clean up or restart from a clean state when a problem occurs. The syntax for the ROLLBACK statement is: ROLLBACK [WORK] [T ...
... "No, no! I meant to delete only the orders before May 1995!" No problemjust issue ROLLBACK. From an application coding standpoint, ROLLBACK is important because it allows you to clean up or restart from a clean state when a problem occurs. The syntax for the ROLLBACK statement is: ROLLBACK [WORK] [T ...
document
... db2 inspect check table name STAFF indexdata results keep insp.out NOTE: The INDEXDATA option only examines the logical inconsistency between index and data. Therefore, it is recommended that you first run INDEX and DATA checking separately, to rule out any physical corruption, before running INDEXD ...
... db2 inspect check table name STAFF indexdata results keep insp.out NOTE: The INDEXDATA option only examines the logical inconsistency between index and data. Therefore, it is recommended that you first run INDEX and DATA checking separately, to rule out any physical corruption, before running INDEXD ...
CasJobs and MyDB: A Batch Query Workbench
... data returned. This mode is intended for lowoverhead queries, such as object creation or deletion, data exploration, and so on. CasJobs imposes no limit on the number of concurrent quick queries. • Queries started with the Submit button are executed asynchronously with a high maximum execution time ...
... data returned. This mode is intended for lowoverhead queries, such as object creation or deletion, data exploration, and so on. CasJobs imposes no limit on the number of concurrent quick queries. • Queries started with the Submit button are executed asynchronously with a high maximum execution time ...
Normalisation Example2
... You are given a spreadsheet that contains information about a private airline company that provides chartered flights to clients. The spreadsheet has been turned into 1NF by removing the repeating groups and choosing a composite primary key. You need to conduct normalization up to 3NF. 1NF: (CHAR_T ...
... You are given a spreadsheet that contains information about a private airline company that provides chartered flights to clients. The spreadsheet has been turned into 1NF by removing the repeating groups and choosing a composite primary key. You need to conduct normalization up to 3NF. 1NF: (CHAR_T ...
The History of Primavera Scheduling
... Having a history of new features or bug fixes to Primavera’s scheduling software including when or what version it was introduced has proven to be valuable with claims work in the past. P6™ has had so many growing pains and is only just now beginning to be documented by outside people. The problem w ...
... Having a history of new features or bug fixes to Primavera’s scheduling software including when or what version it was introduced has proven to be valuable with claims work in the past. P6™ has had so many growing pains and is only just now beginning to be documented by outside people. The problem w ...
Database Design for 499
... organization’s enterprise data model and a general understanding of the organization's data requirements on a project Then you will develop user views to represent data needs for the various users of this database In most cases, an analysis of the user views will yield new attributes and possibly en ...
... organization’s enterprise data model and a general understanding of the organization's data requirements on a project Then you will develop user views to represent data needs for the various users of this database In most cases, an analysis of the user views will yield new attributes and possibly en ...
from the Oracle Database - Greater Cincinnati Oracle Users Group
... • Automated Degree of Parallelism automatically ...
... • Automated Degree of Parallelism automatically ...
BCS THE CHARTERED INSTITUTE FOR IT DATABASE SYSTEMS BCS HIGHER EDUCATION QUALIFICATIONS
... A clear definition of union compatibility - stating that in order to apply the set operators, all component sets must have the same degree (number of columns) and that comparable columns in each set must be of the same data type (compare like with like). It should also be made clear that UNION (an o ...
... A clear definition of union compatibility - stating that in order to apply the set operators, all component sets must have the same degree (number of columns) and that comparable columns in each set must be of the same data type (compare like with like). It should also be made clear that UNION (an o ...
document
... responsible for writing programs to access the Database for Insert, Update, Delete, Query, Reports etc. End users who are really accessing the database for queries / data entry / report generation etc. Lecture by Prof.Dr.S.Sridhar ...
... responsible for writing programs to access the Database for Insert, Update, Delete, Query, Reports etc. End users who are really accessing the database for queries / data entry / report generation etc. Lecture by Prof.Dr.S.Sridhar ...
Database System Concepts, 6 th Ed
... tot_cred numeric (3,0) default 0, primary key (ID)) create index studentID_index on student(ID) Indices are data structures used to speed up access to records with specified values for index attributes e.g. select * from student where ID = ‘12345’ can be executed by using the index to find the ...
... tot_cred numeric (3,0) default 0, primary key (ID)) create index studentID_index on student(ID) Indices are data structures used to speed up access to records with specified values for index attributes e.g. select * from student where ID = ‘12345’ can be executed by using the index to find the ...
dbq - gaby.de
... explicitly, and the system is more resilient to power failures. However, due to the disk accessing, the processing is generally slower than memory resident databases. The query language provides a comprehensive set of functions for the creation, maintenance and enquiry of the database format support ...
... explicitly, and the system is more resilient to power failures. However, due to the disk accessing, the processing is generally slower than memory resident databases. The query language provides a comprehensive set of functions for the creation, maintenance and enquiry of the database format support ...
cursor
... IF NotFound THEN LEAVE menuLoop END IF; IF thePrice < 3.00 THEN UPDATE Sells SET price = thePrice + 1.00 WHERE bar = ’Joe’’s Bar’ AND beer = theBeer; END IF; END LOOP; If Joe charges less than $3 for CLOSE c; the beer, raise its price at Joe’s Bar by $1. END; ...
... IF NotFound THEN LEAVE menuLoop END IF; IF thePrice < 3.00 THEN UPDATE Sells SET price = thePrice + 1.00 WHERE bar = ’Joe’’s Bar’ AND beer = theBeer; END IF; END LOOP; If Joe charges less than $3 for CLOSE c; the beer, raise its price at Joe’s Bar by $1. END; ...
2.0 The Background of Database Systems
... Commercial Off the Shelf Software Create, Read, Update and Delete Database Management System ...
... Commercial Off the Shelf Software Create, Read, Update and Delete Database Management System ...
Parallel Databases
... • Each node maintains a local ‘wait-for’ graph • Distributed deadlock detector (DDD) runs at the catalogue node for each database • Periodically, all nodes send their graphs to the DDD • DDD records all locks found in wait state • Transaction becomes a candidate for termination if found in same lock ...
... • Each node maintains a local ‘wait-for’ graph • Distributed deadlock detector (DDD) runs at the catalogue node for each database • Periodically, all nodes send their graphs to the DDD • DDD records all locks found in wait state • Transaction becomes a candidate for termination if found in same lock ...
DB2_Ch08
... • The MINUS statement in SQL combines rows from two queries and returns only the rows that appear in the first set but not in the second ...
... • The MINUS statement in SQL combines rows from two queries and returns only the rows that appear in the first set but not in the second ...
CouchDB Features
... emit(key,value) - built-in function Results of emit() are sorted by key We query the views to produce the desired result When we query a view, it's run on every document in the database for which view is defined View result is stored in a B-tree ...
... emit(key,value) - built-in function Results of emit() are sorted by key We query the views to produce the desired result When we query a view, it's run on every document in the database for which view is defined View result is stored in a B-tree ...
Extracting UML/OCL Integrity Constraints and Derived Types from Relational Databases
... Other database elements like triggers, views, column constraints, etc. are not considered by those methods. As a result, the generated conceptual schema is incomplete since integrity constraints and derivation rules enforced by the database are not represented. In this sense, this paper extends exis ...
... Other database elements like triggers, views, column constraints, etc. are not considered by those methods. As a result, the generated conceptual schema is incomplete since integrity constraints and derivation rules enforced by the database are not represented. In this sense, this paper extends exis ...
Using Galaxy-P to leverage RNA-Seq for the discovery of novel
... 6,168 SAP polypeptide entries, which was combined with the Ensembl reference proteome. After MS database searching, 522 SAP peptides that mapped up to 491 unique SNP sites on the genome were identified. These SAP peptides would not have been detected if only the canonical Ensembl protein sequences w ...
... 6,168 SAP polypeptide entries, which was combined with the Ensembl reference proteome. After MS database searching, 522 SAP peptides that mapped up to 491 unique SNP sites on the genome were identified. These SAP peptides would not have been detected if only the canonical Ensembl protein sequences w ...
Administration Of Users
... – Credentials provide a way to allow SQL Server Authentication users to have an identity outside of SQL Server. – Credentials can also be used when a SQL Server Authentication user needs access to a domain resource, such as a file location to store a backup. – A credential can be mapped to several S ...
... – Credentials provide a way to allow SQL Server Authentication users to have an identity outside of SQL Server. – Credentials can also be used when a SQL Server Authentication user needs access to a domain resource, such as a file location to store a backup. – A credential can be mapped to several S ...
Microsoft Jet Database Engine
The Microsoft Jet Database Engine is a database engine on which several Microsoft products have been built. A database engine is the underlying component of a database, a collection of information stored on a computer in a systematic way. The first version of Jet was developed in 1992, consisting of three modules which could be used to manipulate a database.Database connect for MicrosoftJET stands for Joint Engine Technology, sometimes being referred to as Microsoft JET Engine or simply Jet. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. It has since been superseded for general use, however, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, ""up-sized"") to Microsoft's flagship database product, SQL Server.However, this does not mean that a MS Jet (Red) database cannot match MS SQL Server in storage capacity. A 5 billion record MS Jet (Red) database with compression and encryption turned on requires about 1 terabyte of disk storage space, comprising hundreds of (*.mdb) files, each acting as partial table, and not as a database in itself.Over the years, Jet has become almost synonymous with Microsoft Access, to the extent that many people refer to a Jet database as an ""Access database"".