Advanced SQL
... Permits definition of procedures in SQL, with if-then-else statements, for and while loops, etc. ...
... Permits definition of procedures in SQL, with if-then-else statements, for and while loops, etc. ...
ReadMe_ 6.3.1-TIV-ITM_MSAPP-FP0008
... "frag" - Sort according "fragmentation percent" value in descending order "space" - Sort according "Space used" value in descending order "optsage" - Sort according "Optimizer Statistics Age" in descending order "rows" - Sort according "Number of Rows" in descending order If user does not specify an ...
... "frag" - Sort according "fragmentation percent" value in descending order "space" - Sort according "Space used" value in descending order "optsage" - Sort according "Optimizer Statistics Age" in descending order "rows" - Sort according "Number of Rows" in descending order If user does not specify an ...
A Taste of SQL
... clauses for each group of a query involving summary statistics, and may reference both elementary data items as well as summary functions. This feature is not available in many SQL implementations - whose work around is similarto the traditional SAS solution - create a table with the maxima, and mer ...
... clauses for each group of a query involving summary statistics, and may reference both elementary data items as well as summary functions. This feature is not available in many SQL implementations - whose work around is similarto the traditional SAS solution - create a table with the maxima, and mer ...
Serverside Java and Database systems
... Used when looping over the result Returns true if there was a row to fetch and false otherwise Moves the cursor one step forward The classic loop is while(rs.next()) where rs is a ResultSet Gets the column with postion ...
... Used when looping over the result Returns true if there was a row to fetch and false otherwise Moves the cursor one step forward The classic loop is while(rs.next()) where rs is a ResultSet Gets the column with postion ...
A Talk on SQL
... details of actually processing the request In short one gets to say WHAT they want, and allow the application program to resolve the nitty-gritty details of HOW to get the results. In addition SQL syntax is "English-like" promoting quick learning of its constructs. SQL has been touted as providing d ...
... details of actually processing the request In short one gets to say WHAT they want, and allow the application program to resolve the nitty-gritty details of HOW to get the results. In addition SQL syntax is "English-like" promoting quick learning of its constructs. SQL has been touted as providing d ...
Academic Script
... minimal super keys are called candidate keys. Assume that a combination of student_name and student_street identifies the members of the student entity set. Then { student_id } and { student_name, student_street } both are candidate keys. Although the attributes student_id and student_name together ...
... minimal super keys are called candidate keys. Assume that a combination of student_name and student_street identifies the members of the student entity set. Then { student_id } and { student_name, student_street } both are candidate keys. Although the attributes student_id and student_name together ...
Exercise 1 – Produce an ERD for UniSpares PURCHASE ORDER
... Exercise 6 – Inserting data to the UniSpares database Using the INSERT command write an insert schema to load the data in the PO and INVOICES forms as shown in Ex 1. ...
... Exercise 6 – Inserting data to the UniSpares database Using the INSERT command write an insert schema to load the data in the PO and INVOICES forms as shown in Ex 1. ...
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... though they may not be using these words. We define and discuss them here as necessary background for the discussion of normal forms that follows. Primary Key The primary key is a fundamental concept in relational database design. It’s an easy concept: each record should have something that identifi ...
... though they may not be using these words. We define and discuss them here as necessary background for the discussion of normal forms that follows. Primary Key The primary key is a fundamental concept in relational database design. It’s an easy concept: each record should have something that identifi ...
Volcano/spl minus/an extensible and parallel query evaluation
... how query processing is really done in commercial database products. For example, using temporary files to transfer data from one operation to the next as suggested in most textbooks has a substantial performance penalty, and is therefore used in neither real database systems nor in Volcano. Finally ...
... how query processing is really done in commercial database products. For example, using temporary files to transfer data from one operation to the next as suggested in most textbooks has a substantial performance penalty, and is therefore used in neither real database systems nor in Volcano. Finally ...
mySQL Introduction
... The goal of using foreign keys is that tables can be related without repeating data Note that foreign keys in SQL are used to c heck and enforce referential integrity, not to join tables. If you want to get results from multiple tables from a SELECT stat ement, you do this by performing a join b etw ...
... The goal of using foreign keys is that tables can be related without repeating data Note that foreign keys in SQL are used to c heck and enforce referential integrity, not to join tables. If you want to get results from multiple tables from a SELECT stat ement, you do this by performing a join b etw ...
SQL and Java In this Lecture SQL and Other Languages JDBC
... • We need to deal with it as best we can • Make sure any database objects are closed • If a connection is left open it can consume resources and might interfere with later use of the database ...
... • We need to deal with it as best we can • Make sure any database objects are closed • If a connection is left open it can consume resources and might interfere with later use of the database ...
SQL and Java
... // Put the values of the new row in each column rset2.updateString(“Name", “Orange”); rset2.updateInt(“Amount", 7); // Add this row rset2.insertRow(); // Go back to the row we were at before inserting rset2.moveToCurrentRow(); ...
... // Put the values of the new row in each column rset2.updateString(“Name", “Orange”); rset2.updateInt(“Amount", 7); // Add this row rset2.insertRow(); // Go back to the row we were at before inserting rset2.moveToCurrentRow(); ...
Part II. Database design - Université technique de Sofia
... In this part of the book, we follow a structured approach to database design that can be regarded as 'design meteorology'; as such it is presented by means of: a decomposition of the entire design activity in successive steps, independent one from the other; a series of strategies to be followed ...
... In this part of the book, we follow a structured approach to database design that can be regarded as 'design meteorology'; as such it is presented by means of: a decomposition of the entire design activity in successive steps, independent one from the other; a series of strategies to be followed ...
Coupling Logic Programming with Relational Databases
... a logic programming language and a relational database management system, is the combination of the efficiency and safety of database systems in dealing with large amounts of data with the higher expressive power of logic systems. A logic programming language is a concise and intuitive way of specif ...
... a logic programming language and a relational database management system, is the combination of the efficiency and safety of database systems in dealing with large amounts of data with the higher expressive power of logic systems. A logic programming language is a concise and intuitive way of specif ...
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... [MATCH {FULL | PARTIAL}] [ON UPDATE {CASCADE | SET NULL | SET DEFAULT | NO ACTION } ] [ON DELETE {CASCADE | SET NULL | ...
... [MATCH {FULL | PARTIAL}] [ON UPDATE {CASCADE | SET NULL | SET DEFAULT | NO ACTION } ] [ON DELETE {CASCADE | SET NULL | ...
Programming in Oracle with PL/SQL
... Program Structures: Procedures and Functions • A set of SQL and PL/SQL statements grouped together as a unit (block) to solve a specific problem or perform a set of related tasks. • An anonymous block is a PL/SQL block that appears within your application and it is not named or stored in the databa ...
... Program Structures: Procedures and Functions • A set of SQL and PL/SQL statements grouped together as a unit (block) to solve a specific problem or perform a set of related tasks. • An anonymous block is a PL/SQL block that appears within your application and it is not named or stored in the databa ...