Updating sql record
No error occurs, because the update has been applied successfully.ADO, compared to the BDE, has taken a more practical approach to the problem.Answer 2: To make it possible for the plch_proc procedure to compile without error, change “AND” to “OR” in the WHEN clause of the exception section.Because only one exception can be raised at a time in a session, it doesn’t make any sense to allow you to check for two (or more) exceptions in a single handler.You can define collection types in a procedure, function, or package.You can pass collection variables as parameters, to move data between client-side applications and stored subprograms.This article explores how you declare records, populate them with rows from a table, and even insert or change an entire row in a table by using a record. The process is similar to inserting a record and works with both automatic SQL and explicit SQL.
The Client Data Set/Provider architecture allows you to specify a primary update table (and advanced features actually not covered in the book) and also customize the updates' SQL, as we partially saw in Chapter 14 and we'll further explore in Chapter 16, "Multitier Data Snap Applications." ADO supports an equivalent to cached updates called batch updates, which are similar to the BDE approach.It is rare, indeed, to find a PL/SQL program that does not either read from or make changes to tables in a database.Tables are made up of rows of data, each consisting of one or more columns, so it stands to reason that Oracle Database would make it as easy as possible to work with those rows of data inside a PL/SQL program.In the next section we will take a closer look at ADO's batch updates, what they can offer you, and why they are so important.However, in this section you won't need them to solve the problem of updating a join, because in ADO, joins are naturally updatable.
The data or information for the database are stored in these tables.