Running GBrowse and DAS/1 on GUS
... • Live interactive with database • Flexible with database schema – GUS, Chado • Support complex data type, e.g. synteny, protein data Cons: • Relatively slow – database tuning + bulkSubfeatures • Familiar with SQL ...
... • Live interactive with database • Flexible with database schema – GUS, Chado • Support complex data type, e.g. synteny, protein data Cons: • Relatively slow – database tuning + bulkSubfeatures • Familiar with SQL ...
Access lesson 1 Database Basics
... SHORT TEXT • Data type used to store up to 255 characters of data in a field and is a good data type for a field that stores small amounts of text like names, cities and ...
... SHORT TEXT • Data type used to store up to 255 characters of data in a field and is a good data type for a field that stores small amounts of text like names, cities and ...
Databases
... An example of an integrity constraint would be that a SSN must have 9 characters separated by dashes (NNN-NN-NNNN). If an entry does not match this format, it will be kicked out. ...
... An example of an integrity constraint would be that a SSN must have 9 characters separated by dashes (NNN-NN-NNNN). If an entry does not match this format, it will be kicked out. ...
The database development process and Relational model
... by the DBMS. Surrogate Key - A primary key whose values are automatically generated by the DBMS there is no need on the user’s part to enter a value for primary key - the system does it for you. Surrogate keys can be an auto-incremented integer, or a GUID or UUID (Read the RFC). Some DBMSs such as ...
... by the DBMS. Surrogate Key - A primary key whose values are automatically generated by the DBMS there is no need on the user’s part to enter a value for primary key - the system does it for you. Surrogate keys can be an auto-incremented integer, or a GUID or UUID (Read the RFC). Some DBMSs such as ...
Databases
... An example of an integrity constraint would be that a SSN must have 9 characters separated by dashes (NNN-NN-NNNN). If an entry does not match this format, it will be kicked out. ...
... An example of an integrity constraint would be that a SSN must have 9 characters separated by dashes (NNN-NN-NNNN). If an entry does not match this format, it will be kicked out. ...
PowerPoint 97
... • To create a record with a given foreign key, a record in the corresponding table must have that value as its primary key. • Many to many relationships cannot be modeled (directly). Find examples to support these in SPJ! Relational Algebra, Calculus & SQL ...
... • To create a record with a given foreign key, a record in the corresponding table must have that value as its primary key. • Many to many relationships cannot be modeled (directly). Find examples to support these in SPJ! Relational Algebra, Calculus & SQL ...
Using SQL inside C# Presentation
... SQL code used here. This should include: A Table of Keywords and their uses An explanation of ADO An explanation of connection strings ...
... SQL code used here. This should include: A Table of Keywords and their uses An explanation of ADO An explanation of connection strings ...
From Conceptual Model to Relational Model
... minimum amount of redundancy and allows users to insert, modify, and delete the rows without errors or inconsistencies ...
... minimum amount of redundancy and allows users to insert, modify, and delete the rows without errors or inconsistencies ...
A comprehensive comparison of SQL and MongoDB databases
... atabase Management System is an umbrella term that refers to all sorts of completely different tools (i.e. computer programs or embedded libraries), with different and unique ways of working. These applications handle, or assist in handling and dealing with multiple sets of information at the same t ...
... atabase Management System is an umbrella term that refers to all sorts of completely different tools (i.e. computer programs or embedded libraries), with different and unique ways of working. These applications handle, or assist in handling and dealing with multiple sets of information at the same t ...
STATE UNIVERSITY OF NEW YORK COLLEGE OF TECHNOLOGY
... HOURS OF LECTURE, LABORATORY, RECITATION, TUTORIAL, ACTIVITY: Two hours lecture, two hours laboratory per week CATALOGUE DESCRIPTION: Database management systems are studied in the context of a SQL-based product. Topics include: logical organization versus phy ...
... HOURS OF LECTURE, LABORATORY, RECITATION, TUTORIAL, ACTIVITY: Two hours lecture, two hours laboratory per week CATALOGUE DESCRIPTION: Database management systems are studied in the context of a SQL-based product. Topics include: logical organization versus phy ...
Information Systems
... - Understand and support the process of software procurement. - Understand how content-based and collaborative-filtering recommender systems work. COURSE CONTENT ...
... - Understand and support the process of software procurement. - Understand how content-based and collaborative-filtering recommender systems work. COURSE CONTENT ...
MS Access Tutorial - Welcome
... You identify that three tables should be created: Product Table containing the product number, ...
... You identify that three tables should be created: Product Table containing the product number, ...
Topic: The Relational Database Model and Database Development
... by the DBMS. Surrogate Key - A primary key whose values are automatically generated by the DBMS there is no need on the user’s part to enter a value for primary key - the system does it for you. Surrogate keys can be an auto-incremented integer, or a GUID or UUID (Read the RFC). Some DBMSs such as ...
... by the DBMS. Surrogate Key - A primary key whose values are automatically generated by the DBMS there is no need on the user’s part to enter a value for primary key - the system does it for you. Surrogate keys can be an auto-incremented integer, or a GUID or UUID (Read the RFC). Some DBMSs such as ...
Physical pointers
... Object oriented, Object/relational • Objects encapsulate structure (attributes) & behavior (operations) • Very flexible, allows user-defined and complex data types Person object – might hold demographic info Decision object – info about a decision/alert (when it was made, type of decision, what per ...
... Object oriented, Object/relational • Objects encapsulate structure (attributes) & behavior (operations) • Very flexible, allows user-defined and complex data types Person object – might hold demographic info Decision object – info about a decision/alert (when it was made, type of decision, what per ...
Object Oriented Database
... constructed from other objects (or other values) by using certain type constructors ...
... constructed from other objects (or other values) by using certain type constructors ...
PPT
... find out number of rows in result with getCount() iterate over rows moveToFirst(), moveToNext() determine column names with getColumnNames() get values for current row ...
... find out number of rows in result with getCount() iterate over rows moveToFirst(), moveToNext() determine column names with getColumnNames() get values for current row ...
Infrastructure
... to create a database schema; to create a domain; to create, drop. alter a table; to create, remove an index [defunct in SQL2]; to create or drop a view; to define integrity constraints; to define access privileges to users (Oracle: CONNECT, ...
... to create a database schema; to create a domain; to create, drop. alter a table; to create, remove an index [defunct in SQL2]; to create or drop a view; to define integrity constraints; to define access privileges to users (Oracle: CONNECT, ...
Introduction to Relational Databases
... information instance that correlates to a row, and consider the normalization rules to refer to entity items, this normal form would not be required. In our example for 2NF above, we assumed that we used a composite Primary Key consisting of Order Number and Line Item Number, and we showed that the ...
... information instance that correlates to a row, and consider the normalization rules to refer to entity items, this normal form would not be required. In our example for 2NF above, we assumed that we used a composite Primary Key consisting of Order Number and Line Item Number, and we showed that the ...
Tutorial 4 Slides
... consume storage space and slow the processing associated with primary key, such as joining tables. Sometimes, primary key is replaced by surrogate (unique values generated by a DBMS) to achieve ...
... consume storage space and slow the processing associated with primary key, such as joining tables. Sometimes, primary key is replaced by surrogate (unique values generated by a DBMS) to achieve ...
Introduction - FSU Computer Science
... find interesting methods/algorithms in a data management paper, implement it, and perform experimental studies ...
... find interesting methods/algorithms in a data management paper, implement it, and perform experimental studies ...
The Relational Data Model
... – A domain D is a set of atomic (indivisible) values. – A domain may include a name, data type, and format, examples: USA_phone_number: the set of ten-digit phone number valid in US. GPA: Possible values of computed grade point averages; each must be a real number between 0 and 4 – Domain of Ai ...
... – A domain D is a set of atomic (indivisible) values. – A domain may include a name, data type, and format, examples: USA_phone_number: the set of ten-digit phone number valid in US. GPA: Possible values of computed grade point averages; each must be a real number between 0 and 4 – Domain of Ai ...
Database Courseware: Functionality and Classroom Usage
... Concurrency – Triggers SQL: distinct, outer join, order by clauses More description in the concurrency modules Making more friendly w/ more help windows • Set of Exams for each topic • Evaluations ...
... Concurrency – Triggers SQL: distinct, outer join, order by clauses More description in the concurrency modules Making more friendly w/ more help windows • Set of Exams for each topic • Evaluations ...
2002ICT Lab Notes 1
... want to first copy and paste the command into notepad so as to ensure there are no hidden characters, and then copy and paste again from notepad to SQLplus. Of course, you can type the commands directly into SQLplus. But editing is hard. Examples: create table Department ( Dept_no char(4)PRIMARY KEY ...
... want to first copy and paste the command into notepad so as to ensure there are no hidden characters, and then copy and paste again from notepad to SQLplus. Of course, you can type the commands directly into SQLplus. But editing is hard. Examples: create table Department ( Dept_no char(4)PRIMARY KEY ...
Introduction to SQL
... 5 Questions (each worth 2 points) - There is only one correct answer! Submit Assignments on the Web ...
... 5 Questions (each worth 2 points) - There is only one correct answer! Submit Assignments on the Web ...
Relational model
The relational model for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd. In the relational model of a database, all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries.Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases deviate from the relational model in many details, and Codd fiercely argued against deviations that compromise the original principles.